CAMERA SHUTTER ANGLE TO SHOOT VIDEO???

[donfetcher]

does anyone know what shutter angle you can use to shoot video with a super 8mm camera, or does anyone know what specific cameras can be used to do so?
thanks,
don

[BolexPlusx]

It's really not so much a matter of shutter angle as frames per second. Video transfers from Super-8 work much better at 24 FPS than 18. What shutter angle does for you is determine the time of exposure per frame, but once that exposure is properly made, the shutter angle becomes a "don't care" as far as the transfer is concerned. So more so than thinking about shutter angle you need a camera capable of 24 FPS if you intend to transfer.

However, I admit I am somebody that shoots almost exclusively for projection, so I defer to Nigel and others on this one.

<font color="#a62a2a" size="1">[ February 08, 2005 10:39 PM: Message edited by: BolexPlusx ]</font>

[Tasty Fish Lips]

Isn't donfetcher asking a question about shooting a video image with a film camera? Not a film-to-video transfer.

[BolexPlusx]

Hmmm...

I suppose you could interpret the question that way.

How about it donfetcher? Are we originating on film and finishing on video, or the other way around?

[donfetcher]

I am shooting a film on super 8mm film with a Nikon R10 camera
in several scenes a movie is playing on a television
How can I capture this image with my my super 8mm camera so that the image on the television is perfect

also wondering about shooting an image off of a movie theatre screen with the super 8mm camera?
if the image is being digitally projected im assuming it is the same as filming off the tevevision, what if the image is an actual film projection?
thanks sorry for the confusion

[Actor]

in several scenes a movie is playing on a television
How can I capture this image with my my super 8mm camera so that the image on the television is perfect

<font size="2" face="Verdana, Helvetica, sans-serif">If the television is NTSC and you are shooting 24fps then the desired shutter angle is 144 degrees.
If the television is PAL and you are shooting 25fps then the desired shutter angle is 180 degrees.
If the television is NTSC and you are shooting 25fps, or the television is PAL and you are shooting 24fps, then ... well ... just don't.

also wondering about shooting an image off of a movie theatre screen with the super 8mm camera?
if the image is being digitally projected im assuming it is the same as filming off the television,

<font size="2" face="Verdana, Helvetica, sans-serif">Probably a good assumption but it's possible that the projector employs an LED array which would eliminate flicker and simplify your job.

what if the image is an actual film projection?

<font size="2" face="Verdana, Helvetica, sans-serif">Then the projector and camera would need to be running at the same speed and in sync. If they are not running at the same speed then they will drift in and out of sync. When they are in sync it will look OK but when they are out of sync the camera shutter will be open when the projector shutter is closed and the screen will appear to be blank, even dark.

The screen will go from bright to dark and back to bright at a rate that is equal to the difference in speeds. E.g., if the projector is running at 25fps and the camera is running at 24fps then the screen will appear to go from bright to dark and back to bright once per second.

If the camera or the projector (or both) are not cystal synced then the phase may vary at random and the brightness of the screen image will also vary randomly.

If you can get both in sync it is desirable that the projector shutter's angle be equal to or longer than the camera's shutter angle to insure that the projector shutter is always open when the camera's shutter is open; otherwise, the image on the screen may appear to be dim.