Losing sharpness - lens AF broken?
33211
How do I diagnose the source of focus problem in a camera?
102058
Weird canon 17-55 f2.8 IS lens error
61989
How can I intentionally include lens flare in my photographs?
96529
How can I calculate magnification ratio I get by reversing a lens?
158181
How does the lens diameter influence photo quality?
124752
How to get autofocus to work with D5100 and AF-P DX Nikkor
71803
Nikkor 70-200 f2.8 VRII - Aperture not working?
46148
Yongnuo YN-685 underexposure issue in bounce mode at longer focal length
81660
Does autofocus work better with f/2.8 lenses vs f/4 or slower?
129246
Will Nikon AF-S "G" lenses autofocus on D3xxx bodies?
92841
Does having the AF points bunched up in the middle make a big difference?
94098
How can I find infinity focus on a kit lens with no markers?
7818
How can I get dramatic shallow DOF with a kit lens?
71946
How to get tack sharp portraits with shallow DOF when lacking an AF point where I want to focus?
27773
What is the effect of a scratched lens?
129196
Does crop factor still apply to a vintage film SLR lens?
109866
Does the lens I just bought have a fungus?