Why does image quality vary across lenses, and what to look for when comparing?
34665
What image-quality characteristics make a lens good or bad?
47999
How do you find out the "sweet spot" of a lens?
113163
Why do some lenses focus past infinity?
77901
Is it worth it to buy an FD-EOS adapter, or is it better to exchange a misbought lens?
109692
How does a spherical lens differ from an aspherical lens?
54122
Why does using a tilt-shift lens make things look miniature?
58973
Will there be any difference in photos taken using full frame and crop lenses on a crop camera?
101300
What to look for in a wide angle lens?
10570
Does sensor size affect lens distortion?
37632
How to compare the focal length of a 50mm prime lens with the default lens of a point and shoot camera?
85191
Are manufacturers' Image Stabilisation ratings for zoom lenses deceptive?
2349
Does white balance totally correct color shift due to lens glass or coating?
94456
Why does my one lens have different exposure (t-stop) than my other lens?
34118
How does taking lower-resolution pictures with a higher-resolution sensor affect image quality?
81660
Does autofocus work better with f/2.8 lenses vs f/4 or slower?
100105
How much of a difference is there between photos where perspective is fixed in post as opposed to being shot with a tilt lens?
33094
Why are these film photos brighter than digital photos taken at the same time with the same settings?