Do computer lens have side effects?
129259
Do computer glasses actually work?
10570
Does sensor size affect lens distortion?
38553
How can I add Lens Flares/Halos?
104041
What does a lens hood do?
24842
Does using an extender actually change the aperture of the lens?
101970
What could cause exposure problems after my camera got wet?
109866
Does the lens I just bought have a fungus?
65877
What is "veiling glare"? How does it affect my photos, and how can I avoid it?
158181
How does the lens diameter influence photo quality?
20439
Do lenses have focal planes or focal spheres/ellipsoids?
46343
When changing between manual and auto focus, should I change the setting on both the body and the lens?
58265
What happens to a lens when you turn the focus ring during AF mode?
38712
Diffraction by a lens
50452
Did film photography have lens correction counterparts?
68909
Is it dangerous to do a lens change with power on?
34665
What image-quality characteristics make a lens good or bad?
26351
What macro techniques offer an alternative to expensive optics?