All Questions
3
questions
1
vote
0
answers
292
views
Why won’t the aperture adjust on my Sony A camera? [closed]
I recently bought a telezoom objective without built-in AF. I did not bother because my camera has an AF which could handle the focus on such lenses.
I always had used lenses with built-in AF so I did ...
- 11
0
votes
1
answer
1k
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Do mobile cameras ever vary f stops?
I've been trying to get my head around the camera in my newly-bought Chinese mobile phone.
I wonder how focusing actually works in these kind of phones. I imagine that in the standard context of ...
- 111
16
votes
4
answers
2k
views
Why aren't lenses designed with extra large apertures for autofocus beyond what's used for imaging?
Historically, designing large-aperture lenses has been difficult because correcting the optical aberrations that arise from large apertures requires complex designs and very large amounts of glass. ...
- 2,366
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