Learn about lenses and how to choose your next lens:
Comparing and Choosing Canon Lenses (with general lens info to also help Nikon users)
Understanding Canon and Nikon Lens Notations
Fixed Aperture vs. Variable Aperture Lenses
The Difference Between f/2.8 and f/4
Why You Shouldn’t Buy the Kit Lens
The Canon 70-300mm Diffractive Optics Lens for Travel
Read more in the Lenses Category of posts.