4 ms·

If I understand the article, the author says that the camera, instead of filling the full 36mm frame on each shot, only fills half. Regular processing, then, ta

If I understand the article, the author says that the camera, instead of filling the full 36mm frame on each shot, only fills half. Regular processing, then, takes these pairs of half photos and prints two on each "regular" print, producing the paired effect. Clever choice of what will go in each frame determines the outcome.

JKCalhoun 4y ago
I think you're correct (but it's 35mm). I think mentioning the film size was an oversight by the author, or maybe since the camera was from 1971 we were supposed to assume.
- mauvehaus 4y ago
  35mm is the width of the film itself. The size of the exposed image is 36mm x 24mm in normal use. The camera in the article exposes frames of (roughly) 18mm x 24mm. Roughly, because of the space between the images that shows up as a black bar in the images in the article.
  - ghaff 4y ago
    Yes. It's a little confusing because 35mm =~ 36mm. But, as you say, the 35mm is the physical width of the film including the perforations used to mechanically advance the film in the camera. Apparently, if you hold this camera horizontally, it shoots a portrait orientation photo of the size you say whereas a "normal" 35mm camera would shoot a landscape orientation photo that is 36mm x 24mm.
    - thread_id 4y ago
      36 is the largest number of exposures available on a roll of film (in US the brands most commonly available were FUJI or Kodak). Normally 12, 24, or 36. So the split frame would allow you to take a maximum of 72 exposures. The format is still 35MM. (ok so this was based on memory) But I did notice that the number 40 was red on the counter implying significance. I quick google search revealed the same question and answer plus additional manuafacturer: AGFA https://www.photo.net/discuss/threads/20-exposure-35mm-film-huh.259044/ https://www.photo.net/discuss/threads/20-exposure-35mm-film-... "Got an offer to buy several hundred rolls of packaged Agfa APX 400 speed film. It is all in 20 exposure cassettes. Where have I been that I don't recall "20 exposure" rolls? Were they a special run for point-of- purchase at some kind of strange outfit like (insert schlock discount store here) or a serious product?...." "They used to make 20 expsure rolls before they switched over to 24 per roll. That change happened in the 70s I believe, so the film is probably pretty old if it has got only 20 exposures per roll. While thats my best guess, you could be right, and it could have been special order." The camera is from 1961 so would have reference to 20 exposure rolls.
- chris_st 4y ago
  I really wish I'd typed "36mm" due to knowing what mauvehaus et al. wrote, but it was just a typo on my part... TIL!

JKCalhoun 4y ago

I think you're correct (but it's 35mm). I think mentioning the film size was an oversight by the author, or maybe since the camera was from 1971 we were supposed to assume.

mauvehaus 4y ago
35mm is the width of the film itself. The size of the exposed image is 36mm x 24mm in normal use. The camera in the article exposes frames of (roughly) 18mm x 24mm. Roughly, because of the space between the images that shows up as a black bar in the images in the article.
- ghaff 4y ago
  Yes. It's a little confusing because 35mm =~ 36mm. But, as you say, the 35mm is the physical width of the film including the perforations used to mechanically advance the film in the camera. Apparently, if you hold this camera horizontally, it shoots a portrait orientation photo of the size you say whereas a "normal" 35mm camera would shoot a landscape orientation photo that is 36mm x 24mm.
  - thread_id 4y ago
    36 is the largest number of exposures available on a roll of film (in US the brands most commonly available were FUJI or Kodak). Normally 12, 24, or 36. So the split frame would allow you to take a maximum of 72 exposures. The format is still 35MM. (ok so this was based on memory) But I did notice that the number 40 was red on the counter implying significance. I quick google search revealed the same question and answer plus additional manuafacturer: AGFA https://www.photo.net/discuss/threads/20-exposure-35mm-film-huh.259044/ https://www.photo.net/discuss/threads/20-exposure-35mm-film-... "Got an offer to buy several hundred rolls of packaged Agfa APX 400 speed film. It is all in 20 exposure cassettes. Where have I been that I don't recall "20 exposure" rolls? Were they a special run for point-of- purchase at some kind of strange outfit like (insert schlock discount store here) or a serious product?...." "They used to make 20 expsure rolls before they switched over to 24 per roll. That change happened in the 70s I believe, so the film is probably pretty old if it has got only 20 exposures per roll. While thats my best guess, you could be right, and it could have been special order." The camera is from 1961 so would have reference to 20 exposure rolls.
chris_st 4y ago
I really wish I'd typed "36mm" due to knowing what mauvehaus et al. wrote, but it was just a typo on my part... TIL!