What are the differences between pictures shot with spherical and aspherical lenses?
109692
How does a spherical lens differ from an aspherical lens?
18161
How would one use filters with the "bulb"-like shape front element lenses?
80997
What advantages does manual mode have over aperture priority mode?
58265
What happens to a lens when you turn the focus ring during AF mode?
10570
Does sensor size affect lens distortion?
48715
Photographic techniques to avoid chromatic aberration?
21744
Focal length of an ellipse and related results
107952
Do different lenses affect noise level?
156348
What is the difference between an SLR and a DSLR?
20086
Why is the amount of light a lens lets in called the 'lens speed'?
12460
Why prefer the 18-55mm and 55-250mm lenses vs 18-200mm?
114778
What is the difference between DX format and FX format lenses, and which to choose for what purpose?
104812
What differences exist between third-party and official lenses for Canon APS-C DSLRs?
33094
Why are these film photos brighter than digital photos taken at the same time with the same settings?
17488
Why is FF sharper than crop body for the same framing of the same object?
43250
Point vs Pixel: What is the difference?
95539
Do lenses affect color fidelity?