First, let's get to know the different Type 50 films that were available. There is actually an interesting variety...most likely because this was regarded as professional film. This info is from The Land List.
Type 51 - BW, ASA 320, print + negative
Type 52 - BW, ASA 200
Type 53 (old) - BW, ASA 200, acetate negative
Type 53 (new) - BW, ASA 800
Type 54 - BW, ASA 100
Type 55 - BW, ASA 50, print + negative
Type 56 - Sepia, ASA 400
Type 57 - BW, ASA 3000
Type 58 - Color, ASA 75
Type 59 - Color, ASA 80
Type 64, Color, ASA 64 (tungsten)
Type 72 - Color, ASA 400
Type 79 - Color, ASA 100
Lots of choices! So...I wanted to be able to use some of this film. I've seen backs for the 600SE before, and figured I could make one for my Mamiya Universal! I stuck with the basic 545 back because it was only $10, as opposed to the 545i that usually sells for at least $50, and the Pro for even more. I didn't want to spend a lot of money on something that might not work. Here is the back I used.
backwards peel for me, of course...and it works!!!
This was my only test shot. I've verified that it works, and this isn't the kind of film I want to waste screwing around...need to plan each shot and all that. But I think this is one of my favorite projects so far, and certainly something I will use as often as I can.
Until next time! I'll see what else I can cook up...