QUOTE(Dan Wells @ May 19 2007, 04:14 PM)
With the possible exception of full resolution footage off of something like a RED One (never seen one, never seen the results from one), you can't pull decent stills from video. I have seen still captures from super-expensive HD Broadcast cameras (the $50,000 machines), and they're barely adequate for the newspaper - the place they sometimes pop up is in the sports pages - if nobody got the runner sliding into base with a 1D mk IIn, but the TV guys have a great shot, the papers will sometimes run a frame grab off the HD camera. You can tell even in a newspaper when they've done that (aside from the photo credit saying thanks to NESN, the image doesn't look as good as a true still). This is the extreme case - $50,000 video camera, very low quality print process hiding a lot of the flaws - and it still doesn't work!
The other example of still and moving pictures not being interchangeable is that Hollywood is VERY reluctant to print a single frame from a movie for advertising (they'll do it only if they have no decent choice among the stills, and only for a publicity photo, NEVER a poster) . I learned this from a still photographer who shoots on movie sets for a living! Even if they're shooting the movie in 70mm, they always have somebody with an M8 (quiet is VERY important) there shooting stills as well. I imagine that the quality difference there is because of the way movie camera shutters work or some similar factor, because 70mm SHOULD be equivalent to 645 stills if all else were equal - the presence of the still photographer shows that all else is not equal. I don't know if the RED camera will change this - I think its shutter is electronic, so if it is the shutter, the RED may be able to do it...
-Dan
Hi Dan,
The reason that movie frames (or digital movie frames) are not used for stills is that the shutter speed on each frame is 1/48th second. This means that there is almost always too much motion blur to use for stills. Also, if the movie is shot on film, nobody wants to handle the original camera negative to retrieve still images. It's just too risky. Also a typical 35mm movie frame is about 1/4 the size negative as a 35mm still camera frame.
Some other movie trivia: No 70mm theatrical hollyood films have been shot in 70mm for years. (I'm not including special IMAX films).
I've never seen an M8 used by a movie set still photographer. Almost all use nikon or canon in a sound proof housing. Almost all now shoot digitally. The last semi major film that I worked on had a still photographer using a Sony digitcam because it did not need a sound proof box
Hope this proves interesting to any of you interested in the movie biz....
-bruce
ps. here's a frame from one of those $50,000 HD cameras
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