Why doesn't the aperture change on a Nikon AF 50mm ƒ/1.8D lens?
71803
Nikkor 70-200 f2.8 VRII - Aperture not working?
129196
Does crop factor still apply to a vintage film SLR lens?
96544
Why don't lens mount adapters have the same effect as extension tubes?
4403
Nikkor f/1.8G 35mm or 50mm?
73871
Why do I get the "Press Shutter Release Button Again" error when my D3200 isn't set to max. aperture?
129284
Why no zoom lenses with a maximum aperture wider than f/2.8?
101960
Why are crop lenses indicated with focal lengths they don't have?
71282
AF mirror not flipping on Canon 350D
139331
Why doesn't exposure change when changing focal length?
80777
Canon 700d - lens does not move when focusing?
46343
When changing between manual and auto focus, should I change the setting on both the body and the lens?
63434
Technically, why is the out of focus area blurred more when using a bigger aperture?
38537
What is the relationship between ISO, aperture, and shutter speed?
113163
Why do some lenses focus past infinity?
21523
How can aperture be f/11 on a lens with an aperture range designation of 3.5-5.6?
23545
When to use shutter priority instead of aperture priority?
40865
What should I do when I have lenses with different filter thread sizes?