The idea is to keep astigmatism to a minimum - the back tilt helps the extreme top of the image see the hole as much of a circle as possible, as opposed to a narrow ellipse. Here's a quick diagram that I hope explains the idea:
Probably also helps with falloff, though that wasn't really the original intention.
Considering how quick the turnaround is when making pictures in my neighborhood with the trays set up in my basement, I'd say you're not far off the mark. Though of course it doesn't make the cool sounds an SX-70 does.
Simon Cygielski
IG: https://www.instagram.com/mr.cygielski/
Simon Cygielski
IG: https://www.instagram.com/mr.cygielski/
A too-long-term project, a Seneca Improved View 8x10, variant 4:
Seneca Improved View by Scott, on Flickr
When I got it I thought the bellows were the fugliest things I'd ever seen, but they've grown on me. Just waiting on film...
Eastman View 2D 8x10 with a 15 1/2 inch Wollensak Velostigmat lens in a Studio shutter. The shutter is only open/close (no speeds) so I fitted a #8 Packard shutter to the front which gives me the option of 1/20 (approx) or B.
The Packard's too big to fit behind the lens, so front-mount was the only option.
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