Why is my reversal ring not working with the lens's aperture?
132199
How to lock aperture using Reverse ring with Canon 600D?
70690
Why are only certain shutter speeds or apertures available?
47620
How does a circular lens produce rectangular shots?
20168
Wide Angle Lens on a Step Down ring?
77901
Is it worth it to buy an FD-EOS adapter, or is it better to exchange a misbought lens?
31514
How does the post-2.0 Puzzle Ring work?
21637
How does one use circular polarizers?
73871
Why do I get the "Press Shutter Release Button Again" error when my D3200 isn't set to max. aperture?
38537
What is the relationship between ISO, aperture, and shutter speed?
17059
A ring element with a left inverse but no right inverse?
7392
Why is my Nikon 50mm f/1.8 giving me an fEE error?
62759
Why am I allowed to turn my focusing ring beyond infinity?
148588
Lens correction in darktable when my lens isn't known?
46148
Yongnuo YN-685 underexposure issue in bounce mode at longer focal length
133548
How can a speedbooster improve the light performance of a lens?
42808
Simply bad focus or too big aperture?
79624
Lens cleaning pen - disappointed by results, is this working right?