Printer 1:1 alignment aids
Commonly 35mm leaders have various frames that lend themselves for use as reference images during optical printer alignment. An example is this colour by deluxe graphic where the circle is a handy shape to see macro degree as well as left and right shift, etc.
Its worth mentioning that the pins in the camera gate can only acccomodate 35mm, but, once 1:1 macro is set up, then it doesnt matter what gates go in afterwards as it will still be 1:1.
