Non-uniform lens flares
51013
How to correct flares and sharply focus on my telescope when viewing planets.
48715
Photographic techniques to avoid chromatic aberration?
67822
How to determine lens undistortion values for motion tracking?
47620
How does a circular lens produce rectangular shots?
18161
How would one use filters with the "bulb"-like shape front element lenses?
113839
How can I visualize or simulate the effect of different focal lengths?
7840
Creating volumetric lighting (crepuscular rays) in Cycles
79766
What does it really mean that telephoto lenses "flatten" scenes?
4389
How can a lens with a single focal length focus on more than one plane?
137911
Electric field in a non-uniformly charged sheet
123588
What causes these streaked rays from light sources?
36265
Why do I get blurry pictures when I take a lens attachment off?
27106
Inconsistency in ray diagram
34665
What image-quality characteristics make a lens good or bad?
61006
Can a lens shader be made in cycles
52691
Sign convention in optics
129284
Why no zoom lenses with a maximum aperture wider than f/2.8?