dave@onfcanim.UUCP (Dave Martindale) (07/05/86)
In article <674@osu-cgrg.UUCP> flip@osu-cgrg.UUCP (Flip Phillips) writes: >> >In article <2257@uwmacc.UUCP> net@uwmacc.UUCP (jeff kesselman) writes: >> >>I'm trying to find a video deck with single frame record capability that my >> >>university could afford (Some where in the $1000-$1500 area). Any suggestions? > >why not just set up a 16mm camera, do the single framing and have it >transfered to video :-) Actually, don't joke. That's potentially capable of pretty good quality, and as a bonus will record video that varies from NTSC specs in any of a variety of ways. Things to remember are: 1) if you want the best colour rendition, you've got to do correction for the gamma of the video monitor as well as for the film characteristics; in practice this is a single process not two separate ones 2) if you want really stable images, the 16mm camera must be pin-registered. 3) if at all possible, control the exposure time by blanking the screen, opening the camera shutter, unblanking the screen for a specific number of video frames, blanking the screen, and closing the shutter. This way, the whole image area receives the same exposure. If you use the mechanical shutter on the camera to control exposure, you risk seeing dark or light bars on the image since the screen image is flickering. This doesn't let you see what you've done immediately, but appropriate 16mm equipment is probably cheaper than video equipment capable of the same quality.
flip@osu-cgrg.UUCP (Flip Phillips) (07/07/86)
<14895@onfcanim.UUCP> erupts: > In article <674@osu-cgrg.UUCP> flip@osu-cgrg.UUCP (Flip Phillips) writes: > >> >In article <2257@uwmacc.UUCP> net@uwmacc.UUCP (jeff kesselman) writes: > >> >>I'm trying to find a video deck with single frame record capability... > >> >>university could afford [...] Any suggestions? > > > >why not just set up a 16mm camera, do the single framing and have it > >transfered to video :-) > > Actually, don't joke. That's potentially capable of pretty good quality, > and as a bonus will record video that varies from NTSC specs in any of a > variety of ways. > I am not joking... that is one of the ways we do it here. Damn effective. -- Flip Phillips {ucbvax,decvax}!cbosg!osu-cgrg!flip Computer Graphics Research Group, The Ohio State University "All I wanted was a Pepsi, and she wouldn't give it to me..." -Suicidal Tendancies