Apples

Apples

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nikon D3100. can the continuous autofocus (on video) be turned off so that it operates similar to the cannon 500d? this is mainly to shut down the noise from the autofocus which i read in earlier posts.

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Bear in mind that turning off the continous autofocus will mean that if your subject moves they will likely become out of focus. You're going to have to be pretty nifty with manual to avoid a lot of back and forth blurring. – ElendilTheTall Mar 1 '11 at 10:33
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Turning on autofocus on the D3100 produces pretty much unusable video because of the lens sound. – rfusca♦ Mar 1 '11 at 12:27
Even with an external microphone or sound off, it is still a pain to use since the video AF is so slow it always lags behind a moving subject, even one that does not move so fast. In AF-S mode you can refocus at any time too, so the AF-C option is the least useful. – Itai Mar 1 '11 at 14:28
is it alright to ask questions that could blatantly been answered by reading the manual? (or pressing the "?" button near the options and reading the captions on the menu) – JoséNunoFerreira Mar 1 '11 at 23:23
This is a perfectly valid question. It is answerable, it's on topic ("using photographic equipment", and several other questions about the video feature of SLRs have been deemed on-topic.), and it's not subjective or argumentative. Sure, the answer might be found in the user manual, but there's no reason we can't repeat the answer here. – Evan Krall Mar 2 '11 at 8:51

1 Answer

up vote 5 down vote

Two easy ways.

  1. Turn your lens to Manual focus. Nearly every lens has some kind of switch to toggle between modes of focus.

  2. In camera, while in video mode.. press the "i" button, go down to where it says "AF-F" (the fourth option down on your menu, under the ISO setting) and change to "MF" or "AF-S"

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