Hi all,
A little over a year ago I made an 11x14 expansion back for my 8x10 Deardorff V11. I am now interested in making an 8x20 expansion back for my 11x14 Deardorff V11. My original plan was to make a 14x17 back which would be rather easy because of the proportions but if I can do it with an 8x20 back then I think I'd like to do that. The last project ended up being an expansion back with its own set of bellows and its own rear frame that was mounted to a separate tripod. This time around I would like it to be a rigid unit that fastens directly to the rear standard without the need for an additional tripod. This would be easy to fabricate using a 14x17 spring back but will probably prove a little more challenging with an 8x20 back. I'm thinking about using an 8x20 back traditionally for a 12x20 camera to make the attachment. My concerns are making sure the weight of the expansion back would be light enough to ensure that it doesn't stress the rear standard of the camera and cause damage. The dimensions of 8x20 would be a little more difficult to pull off because of the more extreme dimensional difference between the longest sides. I'm wondering how deep the adapter would need to be in order to ensure no vignetting caused by the dimensions of the V11 rear frame. There is effectively 3 extra inches on each side to go from 14" to 20" but I'm wondering if there is a relatively simple way to figure out the necessary depth without having everything in front of me. I don't want to buy the stuff before I know if it is feasible.
Many people here were extraordinarily helpful with the last expansion back project so i wanted to bounce this off of the group before I begin. So any ideas on how to pull this off? Ideas of how to figure out the depth? Think weight will be too much? Thoughts? Thank you!
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