Kenneth,
 
I've often thought that for some large lenses, that this might be the way to go. Buy an old Speed graphic body and stick it behind a large process lens. Just build it into the front standard.  Adjust the position of the individual lenses with the configuration of the lensboard to get the rear element very close to the shutter. I don't see any particular disadvantages.  Just make sure to give enough clearance around the image cone to prevent excessive vignetting. With a speed graphic body this should not be hard, especially with lenses of more than say 8 inches fl or so. It would be a practical way to get exposure control on lenses that can't be fitted to a conventional shutter economically. One drawback might be the lack of flash synch.  That is not completely insurmountable, though, since I remember someone on this list modified a Graflex D to have a full frame shutter curtain slit in place of the 1/8 inch one, then placed a flash contact on that slit.  I think that would give something like 1/30 sec synch at max curtain tension. I've been trying to remember who that was since I'd like to try the same thing and I'd love to pick his brain.
 
 
 
Gene
----- Original Message -----
Sent: Sunday, September 22, 2002 4:00 PM
Subject: [Cameramakers] Using a focal plane shutter behind the lens

Does anyone know if there are any disadvantages to using a focal plane shutter behind the lens rather than at the focal plane? If so what are they?
 
Kenith Ryan

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