Why are crop lenses indicated with focal lengths they don't have?
51290
Does my crop sensor camera actually turn my lenses into a longer focal length?
145622
How do constant aperture zoom lenses work?
91202
Why is the aperture ring removed from new Nikon lenses?
86838
What do the red values mean on the distance scale of a lens?
61989
How can I intentionally include lens flare in my photographs?
129284
Why no zoom lenses with a maximum aperture wider than f/2.8?
80219
What is the relationship between field of view and focal length for fisheye?
128401
Why is sharpness lost in my DSLR viewfinder?
60038
How do depth of field and the circle of confusion relate to pixel size on the sensor?
91299
What does a megapixel designation on a lens actually mean?
106897
Why are superzoom lenses small but giant telephoto lenses huge?
152115
Can I convert binocular zoom to equivalent lens focal length?
54122
Why does using a tilt-shift lens make things look miniature?
139331
Why doesn't exposure change when changing focal length?
141557
Is Sigma 150-600mm f 5-6.3 contemporary "F4-5.6" on Crop Sensor?
75334
Why do Full Frame lenses and crop body lenses exhibit the same crop factor when used on a crop body camera?
27692
Why do I need an add-on lens to take smartphone macro photos?