 Patricia MacKenzie |
Film How many feet of film fit in a standard 35 mm film case?
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Mark Feldstein |
Calling Alan !!! Alan Marcus !!!! Alan has to know the answer to this one, right off the top I'll bet. I think it's about 3 feet for a 36 exposure roll give or take a couple of inches.
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Alan N. Marcus |
The 35mm film: Film width 35mm. Alan Marcus (marginal technical gobbledygook)
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Kai Eiselein |
Seems to me I could load about 40 frames into canister back when I "rolled my own" which is about 5 and half feet. Most of the time, I only had 6-12 exposures per roll.
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Bob Cammarata |
A properly loaded roll of 36 exposure film should yield around 38 frames. The leader represents roughly another two frames worth of film. (I humbly bow to Alan's acumen as to the actual physical length of film within each canister.) The ratio of actual "keepers" though is another story and will vary with each photographer.
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Alan N. Marcus |
Can't use metric? 12 exp. = 26.18 inches = 2 ft. 2 inches Too bad! I am sorry for all who can't use the most lovely of units. Alan Marcus
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Alan N. Marcus |
Come all ye young fellows that follow the film, give me some time to blow the man down. When I was a young man I wasted me prime replenishing film for the black ball line. Theirs 24mm, theirs 35mm theirs 70mm, you’ll split your sides laughing the sights you will see ----. 50+ years in the business you see. 35mm is exactly 0.177 square feet per running foot i.e. 12 inches length deducted are the sprocket holes. 12 exposure = 0.177 sq. ft. – 24 exposure = 0.42 sq. ft. – 36 exposure = 0.592 sq. ft. – 120/260 = 0.23 sq. ft. per running ft. a roll 120/620 = 0.54 sq. ft. – 220 = 1.094 sq. ft. Alan Marcus
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Mark Feldstein |
Whoa !!! I stand corrected. I was thinking 120. M.
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Patricia MacKenzie |
Thank you all! I have passed the 36 exposure limit, am at, by count, I think, around 42 and it hasn't stopped winding. Unless there is something wrong with my camera, which I don't think is the case, the film winding is going to continue. So I have to ask if anybody knows how many feet not exposures fit in a standard 35mm film case? I get to take it to the counter at the drugstore to get them developed and I am going to need to tell them something about it if I lose track of exposures....
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Alan N. Marcus |
Sorry I can’t tell you the maximum number of exposures that can be rolled into a 35mm cassette. It is a variable based on the film’s thickness which varies by type and brand. The cassette is designed to hold 36 exposures so maybe you can pack 40 ~ 45. If it were me, I would be worried that a malfunction might have occurred. Its time to re-wind and take the roll in for process. You need not be concerned about the exact length of the film you rolled inside the cassette. You don’t need to tell them anything, if it makes you happy, tell them its long. All automatic film processors at the one-hour shop are daylight operated. The film cassette is attached to a leader card via adhesive tape, in the light. The leader card is placed in the load end and is pulled into the processor by an advance mechanism that engages sprocket holes in the center of the leader card. The leader card accepts two rolls (left and right) they can be different lengths. The access door is closed as the film advances; this maintains light-tight integrity. The film is pulled out of the cassette due to its attachment to the moving leader card. When all the film is extracted from the cassette it yanked forward as the film is attached to the spool of the cassette with tape. As the cassette moves forward it triggers a micro-switch. A knife cuts the film free at the cassette’s lip. If the film is not taped to the spool, that’s OK too. Alan Marcus (marginal technical gobbledygook)
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