Hmmm - it's possible locating the pinhole much of a distance from the aperture could result in vignetting -- maybe someone out here in cyber-photo land has actually done one and can chime in. Substituting a pinhole plate for the lens will result in a field of view similar to the lens version so that could mean everything will be happy. I know in some other pinhole stuff I've done where there was a relatively wide angle of view, it's amazing how easily vignetting reared its ugly head.