autofocus: infrared or contrast measurement?

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autofocus: infrared or contrast measurement?

http://www.apple.com/iphone/iphone-3g-s/photos.html

Latter is a common method in video cameras and consumer-level digital cameras that lack shutters and reflex mirrors. Some DSLRs (Olympus E-420, Panasonic L10, Nikon D90, Nikon D300 in Tripod Mode) use this method when focusing in their live-view modes.

I figured this may be the place to ask. Should I expect some apple official moderating the forum to answer my question?

Posted on Jun 10, 2009 11:28 PM

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Answer 1

Jun 11, 2009 5:26 AM in response to huz_iphone

Intrinsic contrast is used for the autofocus. A look at the gallery pages shows that there is no place on the back cover for an IR emitter, and it won't be TTL in a camera that size.

Should I expect some apple official moderating the forum to answer my question?

No. This is a user-to-user forum - you will almost never see Apple personnel answering questions in an official capacity (although there are some Apple employees who participate on their own time).

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Answer 2

huz_iphone Author

Level 1

8 points

Jun 11, 2009 8:50 PM in response to huz_iphone

Thanks.

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