Progress Report
Earlier discussions in this thread convinced me that I should finish my attempt to use 120 film in the Agfa Clipper. I'm not done yet; but, I thought that it might be useful to report what I did and the results. I used 120 film on a 120 spool as the supply, fitting it to the Clipper's supply side using the crimp connectors I mentioned in an earlier post. For takeup, I used the original 616 spool. To keep alignment, I built up each end of the spool inside by 3mm with some sticky foam product that I had on hand. I masked the film gate slightly, about 3mm top and bottom with black card stock. Using a dummy roll, I figured out (imperfectly, as it turns out) a winding scheme to get 12 frames and assure no overlaps. I didn't get overlaps, but only got 10 & 1/2 frames because I miscalculated how far to wind to get to the start of the film. The mechanics of taking the photos worked smoothly and the camera does a good job, I think. I will post a few small images which have been scanned, given Shadows and Highlight adjustment, and Unsharp Mask @ 20%. Judging from some variations in focus (see, e.g., the tree in scene showing the State Capitol) and wavy horizontals, there is some film movement at work. I haven't thought this through yet (other people's thoughts would be welcome), but my hunch is that this arises from some flexing of the card mask or, seems less likely, a fluctuating misalignment from slop on the takeup spool. Here are the examples:
One additional note: I think that a 1/4 x 20 machine screw with round head and single slot at 3/8" length at the top of the takeup compartment, screwed into a 120 takeup spool, with the threads held by pressure against the plastic "wings", might work to advance the film straight from the 120 supply. I haven't found a 3/8" length yet (they are made); the 1/2 inch one that I have is just a bit too long. Apologies if the first photo attached is too large; though I have resized it at the source, it doesn't seem to change-- I hope the post still goes through.
Billdele