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Results tagged with autofocus
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user 67
Autofocus is the ability of a camera/lens system to automatically adjust the focus of the lens via a motor attached to the focus group of the lens. Contrast with manual focus.
20
votes
Why doesn't auto-focus work with an all-white subject (like a wall)?
Your camera's Autofocus system needs to be able to detect an edge in order to know where to focus. …
- 23.7k
4
votes
Accepted
How does the Nikon D40 decide which focus location to use?
There is a pretty good, in depth article about this at kenrockwell.com.
Essentially, it tries to use the closest subject it can find without extra help from the photographer.
- 23.7k
6
votes
Accepted
Can't auto-focus at full zoom
It is more likely, however, that the autofocus is simply not able to find a clearly defined subject in the area where you are shooting. …
- 23.7k