I don''t mean the frame numbers, although I don't know of any modern camera that uses them, no camera since the beginning of the wide spread use of panchromatic film is designed with one. Does the backing paper on Tri-X need to say Tri-X on it, most shooters will take the spool out of the pouch, and put it in the camera, so the only time it becomes an issue is when the roll is done and taken out of the camera. Although it would mean that it would be hard to identify the roll for processing times. A small printer plate in the slitting equipment could use the current ink to stamp the ends of the paper, then again maybe they print the paper on the fly now. The idea is that they don't need to store 4 miles of paper for each film type, which would save money in inventory costs, Maybe just as well would be to use plain type on the paper, so there is no design aspect to printing up the paper. Paper being used tomorrow would be printed up today.
Was it necessary to only manufacture 70mm in huge lengths, or was that a marketing imperative at the time? 35mm rolls have been sold in all sorts of limited frame quantities even as they can hold up to 36 frames for most varieties. The makers of 70mm cartridges could have disregarded this and decided to produce long-length spools because the assumption is that was what 70mm consumers wanted. On paper, there shouldn't have been any reason not to be able to offer 70mm rolls in lengths comparable to 120 or 220.
A small shame, personally, since there is a film back for the Pentax 645 to accommodate 70mm. Unfortunately, it's terribly massive, as I'm sure any attempts at 70mm cartridge SLRs would also be notably thick and cumbersome. Were there any such beasts?
That's right. They took the magazine and left the camera. It would have been kind of dumb to have left the film behind. Even more dumb would be to have taken the camera back. Every little bit of weight mattered, and NASA wanted moon rocks.
Normal 70mm cassetes aren't really that big/long length. However, there *are* some Hasselblads with 70mm backs that *do* take fairly long rolls. You can even get them for free. All you need to do is hop over to the Moon and pick them up.
except for the 70mm 6x4.5 back, which I'd love to have...if anyone has a line on one, PM me.And they are not free, though with 70 film being rather scarce, you can get any of those for next to nothing.
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