Why does the exif data show a max aperture 1.6 when I am using a f/1.8 lens?
58821
How can the aperture value written in Exif be larger than the nominal limit of the lens?
141557
Is Sigma 150-600mm f 5-6.3 contemporary "F4-5.6" on Crop Sensor?
139331
Why doesn't exposure change when changing focal length?
107481
Why am I seeing two JPG files instead of RAW + JPG with a Canon 1100D?
36265
Why do I get blurry pictures when I take a lens attachment off?
11197
How do I convert lens focal length (mm) to x-times optical zoom?
94456
Why does my one lens have different exposure (t-stop) than my other lens?
74906
What causes an f/0 error on a Nikon D700?
23809
What does the exif ICC profile date mean?
2224
What's the difference between using a 50mm f/1.8G and a 50mm f/1.8D with a Nikon D80?
4
What is the best way to improve Aperture 3 peformance on an iMac?
70690
Why are only certain shutter speeds or apertures available?
129196
Does crop factor still apply to a vintage film SLR lens?
52368
Does the diameter of the aperture increase with increases in the focal length with constant F-number(F-stops)?
11996
How do I find the right size of filters for a lens?
42808
Simply bad focus or too big aperture?
106897
Why are superzoom lenses small but giant telephoto lenses huge?