Apples

Apples

by Garik

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7
votes
5answers
327 views

Why is the main sensor not used instead of the separate AF sensor to focus a DSLR?

From this answer I understand that the reflex mirror of a DSLR is actually not reflecting all the light, but it passes a certain amount on to the AF sensor. So if the reflex mirror can pass light, ...
5
votes
1answer
185 views

Where is the AF sensor located in a DSLR?

As I understand every DSLR has a separate, smaller sensor that handles phase detection focusing. Where is it located? If this location is different for every DSLR, and therefore this broad question ...
3
votes
5answers
270 views

Do all cameras with autofocus need motors?

Do all autofocus cameras need motors to drive the lens? I would have thought today's modern electronics rendered motors obsolete.