Thanks for the response. WHat I'm really looking for is if someone has a sense of what the neg might look like--and let's assume that all of the tech issues are solved...The body of the guitar looks really interesting from a pinhole point of view. Let's say that the ocal length is 400mm to the lateral end of the base of the guitar, and that we place the paper (in sections) along 75% of the interior. That means that there should be some bit of oddness happening at or around the points where the body and paper is somewhat indented. I could just go head and turn this ruined child's gutiar into a cam and see for myself, but being new to this medium I wanted to try and figure out what the resultant image might look like before going thru the hassle, or if someone with experience could help me along in how to visual the outcome without resorting to (yikes) some of the semi-advanced math of geometrical optics. My thinking is that the image might be exhaustedly distorted at the point where the body of the guitar bends in on itself...but maybe not? I'd certainly appreciate any insight on this little noodle of a problem. Thanks alot. John Ptak
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