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<blockquote data-quote="mbraner" data-source="post: 730365" data-attributes="member: 48092"><p>As another video beginner, I've looked around and found very little - and conflicting - info. Can somebody give us, or point us to an existing writeup, on the basics of how DSLR video actually works?</p><p></p><p>E.g., the camera must first be in "live view" mode. AFAIK, that means the mirror is up and the shutter is open the whole time, to expose the sensor. So why do some online articles advise specific "shutter speeds"? Is there an electronic shutter effect? Can one control it (e.g., on a D3300)? (And, aside, if there is an electronic shutter, why didn't Nikon use it to offer higher flash sync speeds, like the D40 used to have, up to 1/500 sec?)</p><p></p><p>Does the ISO setting have any effect on the video? Live view seems to always adjust itself to the available light, so is it always using full-range auto-ISO?</p><p></p><p>How does the camera (in P mode) decide on the aperture to use? If one uses A mode, can one actually choose the F-stop? That would be essential for getting the desired depth of field. Looking through the front of the lens, it seems that in A mode the aperture setting chosen before live-view is turned on does affect the aperture seen when it's turned on.</p></blockquote><p></p>
[QUOTE="mbraner, post: 730365, member: 48092"] As another video beginner, I've looked around and found very little - and conflicting - info. Can somebody give us, or point us to an existing writeup, on the basics of how DSLR video actually works? E.g., the camera must first be in "live view" mode. AFAIK, that means the mirror is up and the shutter is open the whole time, to expose the sensor. So why do some online articles advise specific "shutter speeds"? Is there an electronic shutter effect? Can one control it (e.g., on a D3300)? (And, aside, if there is an electronic shutter, why didn't Nikon use it to offer higher flash sync speeds, like the D40 used to have, up to 1/500 sec?) Does the ISO setting have any effect on the video? Live view seems to always adjust itself to the available light, so is it always using full-range auto-ISO? How does the camera (in P mode) decide on the aperture to use? If one uses A mode, can one actually choose the F-stop? That would be essential for getting the desired depth of field. Looking through the front of the lens, it seems that in A mode the aperture setting chosen before live-view is turned on does affect the aperture seen when it's turned on. [/QUOTE]
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