Exploring Metering Modes

It is one thing to know that your cool new Canon or Nikon digital SLR provides you with 3 or 4 different metering modes. It’s another thing to know how and when to actually use them in the field or in different real life situations. The Canon 5D, 7D, 60D, 50D and T3i all offer four different metering modes – Evaluative, Center-Weighted, Partial, and Spot – as I’m sure you have thoroughly read about in your manual, right? Nikons, like the D7000, D51000, and D3100 generally have three different modes: Matrix, Center-Weighted, and Spot. I’ll try to cut to the chase and simplify the explanations and their uses.  Note that there are some important differences between how they work for Canon and Nikon cameras, particularly the Spot mode.

Canon T3i T2i 60D metering mode partial spot viewfinder
The viewfinder of the Canon T3i (T2i and 60D similar) showing the areas evaluated for Partial Metering (superimposed grey area) and Spot Metering (black circle in center).

Evaluative (Canon) or Matrix (Nikon): This is the default mode for your camera, and it can be used for almost every situation you shoot. Yes, maybe 90% of the time, maybe more. The camera evaluates the entire scene, as divided into several zones, and chooses the best exposure based on its knowledge of thousands of potential image situations. The current metering systems are so good, they can even be relied on for backlit or other challenging lighting situations. An important feature of this mode is that advanced cameras such as the Canon 7D, Canon 60D or Nikon D7000, D5100 take into account the selected focus point in its determination of exposure settings. It is assuming your focus point is on your most important subject, so under challenging and critical situations, it is wise to confirm that the camera has chosen the focus point you want (well, this is always wise). Even better, you should typically manually choose the focus point or cluster of focus points, as the camera has no idea what your intended image is. So in special situations, such as dramatically back-lit scenes or a situation with bright light plus deep shadows, make sure you are not using the center point to focus and meter, and then recomposing to take the shot – because some of the zones that the camera evaluated are now no longer in your shot after recomposing, and other new areas are, so the camera has set exposure for an image other than the one you are taking.


San Miguel Duenas, Guatemala

Partial (Canon only): This mode meters a smaller area, about 9.4%, in the center of the scene on the 7D and 6.5% with the 60D. Nikons do not have this mode, though some Nikons such as the D7000 offer the ability to change the size of the Center-Weighted Metering circle (see Center-Weighted Metering below), so it makes up for this.  The area is approximately a circle that reaches to the top and bottom focus points, and the metering system ignores the rest of the frame. This mode is useful where there is a dramatic difference in lighting between the foreground or subject and the background. For example, when your subject is backlit – maybe standing in front of a bright window or the sun – and consequently their face is in shadow. I know I said evaluative mode can often handle this type of situation, but if you want the face or subject to be properly exposed and not risk blowing the shot, it is worth it to quickly switch to Partial metering mode. Again, another time to use this is when there is a wide range of light in your scene, from bright sunlight to deep shadows. Remember, this mode is not linked to your focus point. The partial area that is metered is always in the center, so meter on the part of the scene that is most critical and that you want properly exposed, using the central area of the viewfinder, lock in that exposure, then recompose and take the shot.


Campo Nuevo, Guatemala

Important Note about Locking In the Metered Exposure: The metered exposure setting is sometimes locked in by pressing the shutter button half-way down or sometimes not “locked” until the image is taken (depending on your camera, or current shooting mode, or how you set it up – read your manual!).  The shutter button also typically locks focus (unless you have changed that setting).  If you wish to lock in focus and exposure separately, which you often will need to do, on a Canon use the AF-Lock (for focus) button and/ or the AE-Lock (for exposure) button – which looks like this: * – to lock in one of them before locking in the other with the half-press or full press of the shutter button. On the Nikons, you have to set one of your buttons to be the exposure lock button, either the AE-L/AF-L Button or the Fn Button on some cameras like the D7000. I suggest first metering on the subject and locking in that exposure by pressing the appropriate button, then recomposing and locking in focus right before or as you take the photo. Or else learning the advanced methods of back button focusing. Get in the habit of knowing how to do this instinctively, and if you need to hold or just press the particular button, so that it comes naturally during critical situations. On the 7D and D7000 and other cameras you can also customize how these buttons perform or set other buttons to do these tasks. You can see in the viewfinder that you have locked focus when the focus dot is lit. You can see that exposure is locked with the AE-L indication in the Nikon viewfinder or the * symbol in the Canon viewfinder.

Locking exposure and focus, independently, each in the brief seconds before you take a shot? Confusing? A little, but not impossible to figure out with some experimentation and practice. Remember, this is why you bought the fancy dSLR, so that you could make use of all these advanced features and take your photos to another level!

Center-Weighted Average: This metering mode is sort of a cross between Evaluative and Partial metering. It acknowledges that the subject is in the center and requires special metering attention, but it also takes into account all the other zones. Again, this is not linked to the focus point, but always to the center, so if your subject is off center – which it typically should be for a more dynamic image – you need to lock in exposure on your subject and then recompose. I have found that with the Canon 50D, this mode is actually more consistent than Evaluative metering, which often over exposes by 1/3 or 1/2 a stop.  Note that you can use the Custom Settings of the D7000 to change the size of the center area being weighted.

This mode can be used when you want to ensure that the subject is properly exposed, but you also want the camera to consider the background. However, if the background is much darker or lighter than the subject, and you want the camera to expose only for the subject and ignore the background, use Spot Metering…


San Miguel Duenas, Guatemala

Spot: This mode meters a small center area, 2.3% of the frame with the 7D, 2.8% with the 60D, and 2.5% with the D5100 and D7000. This area is indicated by the small circle in the center of the viewfinder of the 7D and 60D. There is no center circle in the Nikon viewfinder and you will soon find out why.  So when do you want to use Spot metering? This, again, is useful for scenes with great variation in light and shadow, or in very critical situations. One of the most common ways to use it is when metering for proper exposure on a dramatically lit face or subject, but the exposure of the rest of the scene is unimportant. Or perhaps your subject is set against a plain but consistent background, like a bird against a large blue sky. It is also used to determine proper exposure of a subject before switching the camera to manual for a controlled studio shot, or a critical shot or series of shots where the lighting is not going to change. If your background is completely dark or extremely bright, and you don’t want the exposure system to consider it at all when determining the exposure of you subject, use Spot rather than Center-Weighted or Partial. With Canon cameras, the Spot that is used to evaluate the exposure is in the center of the frame, and is often indicated by a small circle. However, with Nikon cameras like the D5100 and D7000, the Spot surrounds the active focus point and is not necessarily in the center of the frame unless you are using the center AF point. So it is wise to become familiar with how your camera operates.

A fifth metering mode is Manual metering, which isn’t actually a mode in your camera, but is a method of metering. This is where you use a light meter or use your camera as a light meter (such as described at the end in the Spot section above) and then manually set your exposure based on the meter readings. This is used when you want ultimate control of the metering and exposure.

You can learn much more about the Exposure modes of specific cameras, including the 60D, T3i, D7000 and D5100, in my e-book users guide. See my e-book website, Full Stop to learn more about them or click the banner below! The guides also go into much more detail about setting up the related metering mode Custom Functions/Custom Settings and camera controls.

full stop dslr photo photography camera manual guide for dummies canon nikon

I recently ran across an interesting article which takes this discussion to another level by addressing the use of different metering modes in the very specific situation of a wedding. Since one of the main subjects in typically all in white, and the other in black, the metering mode you select and where you meter can make a dramatic difference in the exposure. While that article is specific to weddings, it is useful and helpful to read to further understand how the different modes work, and how special situations might call for some extra thought.

Depth of Field Simplified

I’ve noticed that a lot of searches regarding depth of field (and how to use your aperture to create a blurred or blurry background in your photos, or what is called bokeh) have led to my blog.  I’ve also received some good follow up questions from my previous post about depth of field.  Unfortunately, my post on Mastering Depth of Field may be a bit advanced for those who are still learning about how to use their digital SLR, as it is intended for more experienced photographers.

As I explained in that post:

“depth of field is…the range of distances in which the objects in the photograph will be acceptably sharp. For example, if I am using a 100mm lens, set my aperture at f/5.6, and focus on a subject 10 feet away, everything from 9.69′ to 10.3′ away from me will be acceptably sharp or in focus in the resulting image.”


Open Windows, San Miguel Duenas, Guatemala

Depth of field, then, can mean that everything is in focus from a few feet away to infinity (deep depth of field), or it can mean that a person’s eyes and nose are in focus, but their ears and hair and everything behind (and in front) of them is blurry (shallow depth of field).  One of the best ways to make use of depth of field is to create dramatic, shallow depth of field – the subject is in focus, but the background is blurry.  This technique helps to call attention to your intended subject and minimize distracting background elements, and to make your photos look much, much more like those of the pros.

All of the numbers and fractions and settings and seemingly reverse logic are intimidating at first, and most books add to the complication and confusion.  But it is really quite simple.  Depth of field is controlled by the aperture.  A small aperture size (which is an aperture number like f/16 or f/22) will create deep depth of field, with everything in focus.  A large aperture size (which is an aperture number like f/2.8 or f/4) will create a shallow, dramatic depth of field.  (Since “f/number” is a fraction, f/16 is a smaller number and size than f/4, so I’m avoiding using small number vs. large number terminology, as I said I would try to keep this from becoming too confusing…)   So here is the quick and simple way to create dramatic depth of field:


Open Windows, San Miguel Duenas, Guatemala

Set your camera on Aperture Priority Mode.  On a Canon, rotate the mode dial to Av, on Nikon set the dial to A.

Set your camera to Auto ISO.  Or else if you wish to control the ISO, if you are indoors or in dim light without a flash, set it to 800 or 1600 ISO.  If you are outside in bright sun, set it to 100 or 200 ISO.  If it is a bit cloudy or you are in the shade set it to 200 or 400 ISO.

Look in you manual for how to change the aperture setting of the lens.  For a Canon dSLR in Av mode, that means rotate the little finger dial up there by the shutter button.  On a Nikon it means rotate one of the dials at the top right front or back of the camera, depending on your camera and settings.)  Turn the dial until you see f/2.8 or f/4 or f/5.6 on your screen or in the viewfinder. Since you are in Aperture Priority Mode, the camera automatically selects an appropriate shutter speed.  If you’ve selected the ISO yourself, or even if you are using Auto ISO, you may want to verify that an appropriate shutter speed is being selected.  For example, I found that with the Canon 7D, Auto ISO often selects a much slower shutter speed than what is best for a situation.  Press the shutter button half way down and check the shutter speed.  If it is anywhere from 1/100 to 1/250 or higher, you are fine if your subject isn’t moving.  If the subject is moving, make sure the shutter speed is 1/250 to 1/1000.  If it is any higher or lower than the range you want, you should adjust the ISO until the shutter speed it falls into that range (raise the ISO, keep the aperture the same, and this should result in the camera selecting a faster shutter speed setting).

Focus on your subject using the focus mode of your choice, and take the photo.  Preferably, use single point focus mode and select the focus point you want, so that you have complete control over where the camera focuses.  If the subject is a person or animal, focus on the eyes or eyebrows.  If it is something else, focus on what you want to be sharpest in the photo.

A good book to read to continue learning about this is Understanding Exposure by Bryan Peterson (Third Edition).  Click on the link to see it on Amazon.  It is geared towards photographers just learning about apertures, shutter speeds, and ISO, and helps to explain the concepts better than most other guides.

Let me know how the photos come out! Note in the first photo above that dramatic depth of field can be used to make the foreground blurry as well, not just the background.

Continue reading Mastering Depth of Field.

Assignment: Guatemala – Canon 7D Tutorial and Review

I recently returned from a trip to Guatemala, where I was taking photos for an NGO that works with children, literacy, and education. It gave me the perfect opportunity to try out a bunch of new equipment and really put it to the test in the field.


San Miguel Duenas, Guatemala – Canon 7D, 70-200mm f/4L IS lens at 78mm, 1600 ISO, 1/100, f/5.6

Jump to the Custom Function section

First and foremost, it was the first time I really had the opportunity to use the Canon 7D body (I discuss the additional gear in this related post). The camera performed wonderfully in many ways, however, I did have autofocus related problems – namely a serious front focus issue. With both wide angle and telephoto L-series lenses, the camera was consistently focusing several inches or more in front of the subjects. I played around briefly with the AF Microadjustments, with the intention of taking a closer look at the situation when I returned home.  (Body was later exchanged for another that focuses properly.)

I had another, odd and unexpected complaint in the field, and that is with the high speed shooting modes. One has the choice of 3fps or 8fps, yet I needed something more like 5fps! I’ve included some images throughout the post that are straight from the camera (I merely converted from RAW to JPEG). Anyway, on to the review and instructions for many of the camera’s settings, and how and when to use them in real world situations. And at the end there is some info about video tutorials available for downloading and watching.

If any of the digital photography terms you come across in this post are unfamiliar, be sure to refer to this great glossary for assistance.

Design – The camera is extremely comfortable to hold and use, especially due to the size, shape, and material of the grip, and it felt to be designed perfectly for my hands. It is nicely weighted with both a 16-35 f/2.8L II and a 70-200 f/4, and carries well with an R-Strap attached to the camera body (the 70-200 f/4 doesn’t come with a collar). Due to its similar design and button placement as previous Canon models, it was easy to get used to changing various settings on the fly – everything from ISO right up on top to Flash Control in the menus. There are a few settings that I quickly fell into, but that I would like to experiment with a little more with before I settle permanently into. Here are a few notes, in no particular order of importance:

Av Mode – I set the camera to Av mode for 99% of the time, as that is how I typically work (because I always want to control the depth of field). About the only time I took it out was when I was experimenting in an HDR type situation where I was in Manual and bracketing, trying to properly expose both a dark colonnade I was under and the cathedral in bright sunlight beyond. I haven’t yet worked on combining the exposures, but here is a nice shot that came from that situation:


Antigua, Guatemala – Canon 7D, 16-35 f/2.8L lens at 16mm, 1600 ISO, 1/500, f/16

(edit – I added the camera and lens information to these images.  Please note that the camera settings used for these various images may not necessarily be the “best” or “ideal” settings to use in the specific situations, but camera settings are always the result of changing situations and lighting, coming from another scene, going back and forth between action and still subjects, adapting, experimenting, and sometime just plain not paying attention!)

ISO – I had high hopes for Auto ISO, thinking I would finally be given the freedom to stop worrying where I left it set, but I quickly found that in Av, I didn’t like the slow shutter speeds that were resulting when I selected the aperture and the camera selected the ISO. So I ended up never using it. I would like to experiment with it some more, and figure out if there is something I can do to keep the shutter speeds in a better range. It is wonderful to have the versatility to change ISO on the fly, but one often gets caught up in shooting, and forgets to change it to an appropriate setting, and thus sometimes the shutter speed isn’t the most ideal. So, I just have to stay in the habit of paying attention to where all three settings are as I go from indoor to out or change lenses, etc. This is aided by these settings being visible in the 7D viewfinder.

High Speed Continuous Shooting – many people marvel at the 7D’s ability to shoot 8fps in High Speed Continuous Mode. However, for my purposes on this trip, that proved far too excessive. I often shoot a burst of photos when someone or something is in motion and I want to capture the peak of action or a flattering pose, or when a gesture or facial expression might change rapidly. Unfortunately, 8fps results in a lot of unwanted files, and as I will soon address, these files are HUGE and rapidly fill up a hard drive. But sadly, the Low Speed Continuous drive setting is only 3fps, which is too slow to capture the rapid changes in a scene. The 3fps speed was one of the main drawbacks of my previous body, and a major reason for upgrading. What I need is something in between, maybe 5fps! Perhaps Canon or someone will tweek the firmware to allow this…


San Miguel Duenas, GuatemalaCanon 7D, 16-35 f/2.8L lens at 35mm, 800 ISO, 1/500, f/3.5

Custom Functions – In order for you to get the most out of the 7D, and to set it to function best how you work, you need to dig into the Custom Functions. One of the settings I use is customizing My Menu, and then having My Menu always appear first when I hit the Menu button. (My Menu Settings / Display from My Menu=enable) I played around with different items on My Menu, but have settled for now on the ones that I use most often or that I may quickly need and want to access without digging into the menus. They are:

Flash Control
– you can quickly adjust all the settings for the built in flash, external flash, wireless flash. You can even control all the setting of the 580EX II remotely – when it is not attached to your camera. Very cool.
Exposure Compensation/ AEB – exposure compensation is easy to change at any time with the big dial, so this shortcut is for using when I want to bracket (AEB).
Review Time – I found that I was often shooting away without chimping (looking at the LCD), so I often just turn off the LCD review altogether. Other times, however, I want to review.
ISO Expansion – I haven’t used this yet, but I wanted it handy in case I want to use the high ISO. I typically have this turned off because I didn’t want the camera to default to High ISO during any situations. But considering I wasn’t using Auto ISO, this all seems unnecessary, and now that I realize this, I will have to replace this with something else on the menu! I never went above 1600 ISO, which I did have to use sometimes in very dark classroom settings along with the flash. Upon quick review of those images, the lack of noise in these files is really good.
Format – this is to format the memory card in preparation for use the next day. Always reformat the card, never simply erase them or use the Erase All option if your camera had that (the 7D does not). However, after formatting, turn the dial to select another menu item so that next time you hit Menu, Format isn’t still selected and you quickly make a grave mistake of pressing it.
Highlight Tone Priority (II-3) – this is a great setting to use in a high key situation, or with a bright subject or scene. It helps to retain detail in the highlights so they don’t get blown out, such as a white wedding dress, or a snow or beach scene. I never did use it, but I keep it in this menu to remind me it is there for the day when I do need it!


Chichicastenango, Guatemala – Canon 7D, 70-200mm f/4L IS lens at 155mm, 200 ISO, 1/80, f/4

Other important Custom Function Settings

(please note, this post was initially written to explain how I used these settings in a specific travel situation.  I go into more detail about each of the Custom Function settings, with clear explanations of what they are and when and why to use them, in my e-book Canon 7D Experience, which is discussed below.)

Safety Shift (I-6) – I sometimes enable this setting. It allows the camera to shift the shutter speed or aperture automatically, without your expressed permission, in order to get the shot. This is great for situations where the light suddenly and dramatically changes, such as at a concert.  However if you are carefully choosing your settings, or working with a flash, you will want to disable this so that the camera isn’t overriding your careful settings.

AI Servo Tracking Sensitivity (III-1) – This dictates how quickly focus tracking switches to another subject when it momentarily loses the initial subject, such as when another subject passes in front of it. You can choose to have it stay focused on the initial subject (Slow), or focus quickly on a new subject that moves in front of your initial subject (Fast). Typically I want to stay focused on my selected subject, and ignore someone or something that momentarily passes between us. If you want to quickly focus on different subjects at different distances, put it on fast.

AI Servo 1st/2nd (III-2) – Is your priority focusing on the subject, tracking the subject, firing off rapid shots? Look at the manual to see which situation works best for how you shoot.Personally I think 0 or 1, with the autofocus (AF) Priority, is best. (The camera makes sure it focuses first before taking the shot. It may cost you a microsecond of time however.) Regarding tracking vs. drive, I keep it at 0. Setting 0 continues to prioritize focusing possibly at the expense of speed, while setting 1 will prioritize the speed of subsequent shutter releases at the expense of focus.

AI Servo AF Tracking Method (III-3) – This works with autofocus modes where more than one AF point is active. The names of the choices are a little confusing but what they do is Setting 0 will focus on a closer subject that enters into your view, not necessarily in front of your subject. while setting 1 will remain focused on the initial subject. I keep mine on 1, since I want to stay focused on my initial subject.


San Juan del Obisbo, GuatemalaCanon 7D, 70-200mm f/4L IS lens at 200mm, 100 ISO, 1/1000, f/4

AF Focus Mode (III-6) – I enabled all the AF modes in the Custom Functions – by default, several of them are not available to you unless you change that setting. I started out using Single Point, but sometimes changed to Spot for more precision. The cost of using Spot is that it may not focus as quickly or as well when hand held or with a moving subject, and is generally not necessary unless you are trying to focus on a very small, precise area, such as through a fence to a subject beyond.  I occasionally used AF Point Expansion when photographing rapidly moving children. I don’t know how other photographers work (according to a Canon rep who gave a 7D presentation at B+H, there are big name professionals who still just focus with the center point and recompose), but I always choose the focus point I want manually, using the Multi-Controller button. This takes a little longer, now that I am dealing with 19 focus points, but that enables me to quickly get the composition I want, makes sure the camera focuses on what I want it to, and to get subsequent shots without too much reframing. There is an important menu setting so that you can use the Multi-Controller directly to change the AF point without having to press the AF thumb button first – I believe it is on the screen where you can customize all the camera’s buttons. Oh, and I changed the custom settings so that all the focus points always show, and that they light up upon achieving focus, even in bright sunlight (which they would not do if you had this setting on Auto or Disable). That way I always know when it has focused.  And I set Custom Function III-7 to stop focus point selection when I reach the edge and not loop around to the other side. I’m also thrilled that the 7D has a grid display that you can turn on in the viewfinder, which helps me keep my horizons and compositions straight. The viewfinder looks pretty busy, filled up with AF points and the grid, but when you are shooting away and focusing on your subject, you don’t even notice they are there.

Single Point Focus vs. Spot Focus Size – This controls the size of the area being looked at for focusing purposes on the 7D.  With Single Point AF Area Mode, the camera is actually looking at a cross shape area (all focus points are cross type, center point is dual diagonal as well at certain apertures) that extends about 2x as big as the actual square you see in the viewfinder. With Spot AF Area Mode, the size of the cross is about the size of the square you see, I think perhaps slightly larger.  Now you might think that using Spot AF will be more accurate all the time and sounds like a great idea and will get you sharper pictures, but this is not necessarily the case.  Since Spot AF is so precise, and since autofocus works by looking for an area of contrast, Spot AF may not focus as well or as quickly in many general situations (because it may be looking at such a precise area that is all one color or  tone).

Spot AF is for when you need a really precise “focus beam” to pinpoint, for example a bird in a tree, and not the branches and leaves surrounding it and all around it, which may be closer to you and the camera.  Or if, say, you are shooting through a chain link fence and you want the camera to focus on the animal beyond and not on the fence.  If you were to use Spot AF all the time, you would have to continue to act in a slower and more precise manner, so that you ensure you are focusing on an area of contrast or a nice line.  For example, if you capture a shot of a person, you want to focus on the eye typically.  If you do this quickly with Single Point AF, you can aim at the general area of the eye and you will likely include it in the area being looked at by the camera.  However if you grab a quick shot with Spot AF, you may  be a little off and the camera is looking at an area of cheek to focus on, which will be difficult since there isn’t much contrast there.

Orientation Linked AF Point – This setting allows you to choose your favorite AF points, and when you are hold the camera horizontally or vertically, those points are automatically selected. However, it is very complicated to set, so much so that is would seem Canon doesn’t even understand it. The Canon rep did not fully explain it properly at the B+H presentation, the instructions in the manual do not work, and after 3 different instructions by email from Canon, I may finally have the correct way. I still have to try their latest directions. (note- nope, latest instructions still don’t work properly) **12/17/2009** AHA!! Here it is, finally explained in its entirety.

I also changed the button/ dial function settings so that in Manual mode, the big dial controls shutter speed and the top dial controls aperture. The default is the opposite. I changed this because I almost always shoot in Av mode, where the top dial controls aperture, so when I switch to Manual mode, I want that to remain the same.

Additional edit – August 2011:
I have written a popular e-book user’s guide for the Canon 7D
called Canon 7D Experience. It not only explains all of the features, functions, and controls of this powerful, sophisticated, and highly customizable camera, but also when and why to use them in your photography – including EVERY Menu item and Custom Function setting, with explanations and recommended settings for real-life use.  You can learn more about the guide, preview it, and purchase it here.

 

AF Microadjustments – This is a setting on the 7D which enables you to tweak the auto-focusing to your different lenses. A site about AF micro adjustments that look to be helpful is below:

http://www.northlight-images.co.uk/article_pages/cameras/1ds3_af_micoadjustment.html#Anchor-Canon-49575

Here is a micro-adjustment focus test chart you can use.

Viewfinder – The viewfinder on the 7D is big and bright and wonderful. It is nearly 100% view of the image you will capture. The aperture and shutter speed info is of course displayed below, along with the current ISO setting, which one should get in the habit of glancing at often. See the AF Focus Mode category above for more info on what you can view in the viewfinder to assist with focusing and composition.

Picture Style – I had this on Standard, since I shoot in RAW and intend to post-process, however, I would like to do a comparison of the styles to see which one best matches my visual preferences – although the Picture Styles will only affect JPEGs and, it is important to know, the image you see on your rear LCD screen when shooting RAW.


Jalapa, GuatemalaCanon 7D, 16-35 f/2.8L lens at 35mm, 800 ISO, 1/2000, f/8

File Size – I shot RAW for almost the entire trip, and quickly discovered that these files are HUGE. The files range from about 21MB to around 31MB each. I used SanDisk Extreme III 16GB cards, which worked great, and one card often lasted much of the day. I have no good reason for using SanDisk over Lexar, other than the fact that the Lexar people haven’t approached me about sponsorship… :) The Extreme III cards have been replaced by the new Extreme and Extreme Pro cards, and are thus the old ones are much cheaper at the moment, especially with current rebates. At 30MB/s, they were fast enough for the types of shooting and short bursts I was doing. However, downloading them to my computer and external HD were pretty slow using the SanDisk ImageMate CF card reader. Eventually I’m going to have to spring for a card reader that goes right into the PC slot. I used Adobe Bridge to simultaneously save the day’s files to 2 external hard drives. The 160GB Iomega Ego filled up before the trip was over, but fortunately I also had a Lacie 500GB. I am dreading the number of external hard drives I am going to have to buy for travel and for home storage, but once you go RAW, it’s hard to go back to shooting just JPEG. I’m going to have to look into the Drobo system that many rave about.

Battery Life – The battery life of the 7D is excellent. When you get new batteries, first charge them all the way. Do not recharge until they are completely drained. Do this one or two cycles. I know they say you no longer have to do this, but some claim that seasoning the batteries like this will maximize their charge life. Anyway, one battery lasted well into 2 days of shooting, maybe longer, I didn’t keep track. They just keep going, even with heavy use, chimping (LCD reviewing), frequent use of an external Speedlite flash, and use of image stabilization (IS) on the 70-200 lens. I carried 3 batteries, but probably could have gotten away with 2. The spring-loaded battery door that pops right open for quick battery changes is a nice touch.


Antigua, Guatemala – Canon 7D, 70-200mm f/4L IS lens at 78mm, 100 ISO, 1/250, f/4

Automatic Sensor Cleaning – Like most good dSLRs these days, the 7D automatically cleans the sensor at start up and shut down. Since the dust that is shaken off is collected on a tiny sticky strip at the base of the sensor, it seems to me that you should hold the camera straight as this happens. I’m not sure if this is actually true, but I think I read in the manual that it even says to place the camera flat on a table as you use this, so I have gotten in the habit of holding it straight and still as I turn it off and on. Yeah! No more having to clean the sensor manually with a Rocket Blower!

Video – I did not have a chance to even experiment with the HD video on the 7D yet…so much to learn, so little time…

The next post will review all the other gear I used on the trip – the camera backpack, R-strap, accessories, etc. – and perhaps some of the other lessons learned. Read it here.

Purchasing: If you plan to buy the Canon 7D or any other camera or equipment from Amazon.com, I would appreciate it if you use my referral link by clicking on the text or logo below. Your price will be the same, and they will give me a little something for referring you, which will help support this blog. Thanks!


See and buy the Canon 7D on Amazon

And due to popular request, if you are in the UK, here is my referral link to Amazon UK.

And for those wishing to purchase from B&H Photo, Adorama, or directly from Canon just click their logos on the left side of the page.


Jalapa, GuatemalaCanon 7D, 70-200mm f/4L IS lens at 200mm, 200 ISO, 1/1600, f/4

Again, be sure to check out my e-book user’s guide for the Canon 7D called Canon 7D Experience. It not only explains all the features, functions, and controls of this powerful, sophisticated, and highly customizable camera, but also when and why to use them in your photography. You can learn more about the guide, preview it, and purchase it here.

I’ve run across a nice set of video tutorials (link below) for using the Canon 7D. You can watch them online, or even download them to your camera for viewing. The one on AF Custom Fuctions is especially helpful at clarifying those setting. Be sure to look around on the Canon Digital Learning Center to find all kinds of other cool stuff about using your camera plus useful tips and instructions from pros who use them.

link to Canon 7D Video Tutorials

The distinctive voice you hear in the 7D tutorial videos is Canon guru Rudy Winston, and the photo samples are his images as well. If you are in NYC, you can often find him leading workshops and presentations at places like B+H and Adorama. I went to a wonderfully informative introduction to the 7D that he gave a B+H a month or 2 ago, and these videos are pretty much the same presentation.

Here is additional information from Canon Europe about custom functions of the 7D: