Interesting conclusions. I find at least a one sided glass necessary for 35mm. If one were to reflect a straight line on the emulsion side, you can see how it curves. Prints also show corner deterioration.
I can find no reason for a glass carrier for 4x5 as the film lies flat in a carrier or out. I have two 4x5 Omega glass carriers and two without glass. Grain seems to be sharp right into the corners with or without in 16x20.
I made a one side glass carrier for Omega 4x5 machines for when I print 35mm from them. I filed out a reg 35 carrier to accept an anti-newton ring slide cover glass. The regular glass ones have a locating pin right in the center so you can`t run a film strip straight thru. I got tired of putting it thru crooked and then putting the carrier in the machine cocked 30 degrees.
Bookmarks