Hi,
I've been looking for a Horseman Model 3 rotary roll-film back and several I've noticed don't have the dark slide. Isn't the slide necessary for the film-back operation? Without a dark slide is it possible to change film in the field? I'm assuming there is no light leak when the film back itself is rotated away from the ground glass, but it seem strange that a dark slide is supplied by the manufacturer and discarded by users.
Thanks in advance,
BAB
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