How to Use the Mercury 65mm/70mm Panoramic Back

We show you how to load and shoot with the Mercury "Superback," which accepts 65mm motion picture film, 70mm film, and even 120, in a 6x12 panoramic format for use with large format and Mercury Stereo cameras.
For loading 65mm and 70mm film in cassettes, see • How to Load 65mm and 7...
Chapters:
00:00 Introduction to the Superback
01:53 How to load 70mm film
10:52 Shooting
22:31 Mid-Roll cutting
27:28 Memo / Film type
27:52 Loading 65mm Film
38:28 Loading 120 Film
The Superback (when in stock) can be purchased here: mercuryworks.store/collection...
65mm and 70mm film can be purchased here: mercuryworks.store/collection...

[@khanscombe619]

How do I identify the perf type I have installed? Using Linhof Technika 2x3 but the extra loaded Linhof cassettes fit my Hasselblad A70. It’s old Kodak Tri-X 320. In the Linhof I count 15/70 perf it moves 50 frames in roll

[@mercurycamera]

Check out shoot70mm.com/70mm_film.html ("Perforation Types" section) for a direct comparison, including measurements. You probably have Type 2, but this should give you a definite answer!

[@g1234538]

Regarding the different kinds of film you can use in a 70mm back (including making 65 work), what is the situation with 70mm print film? I imagine it would be incredibly slow, but would it work?

[@mercurycamera]

Yes, it does work. You need to "all-perf" mod your back as described in this video, because the perfs on 70mm motion picture print film are not Type 2. As long as you are "all-perfed" you can use that film. It involves a number of challenges in ISO, color filtration, and developing that we will cover at some point in the future.