6 ms·

Various sources list the Canon 1000D shutter life expectancy at between 25,000 and 100,000 activations. If the 8mm film is 16 frames per second, then this setu

by jshipc 2y ago

Various sources list the Canon 1000D shutter life expectancy at between 25,000 and 100,000 activations. If the 8mm film is 16 frames per second, then this setup should be able to capture between 26 to 104 minutes of film before consuming the expected lifespan of the camera shutter. Edit: Changed math from 24 frames per second to 16 fps to reflect the 8mm film fps standard playback speed of 16 fps.

actionfromafar 2y ago
The article does not mention this, but many Canon (and I assume other brands) have an option to use only the electronic shutter. For a non-moving subject such as this, it's the perfect option. But it's a good caveat to consider when doing such a project.
- snypher 2y ago
  They talk about shutter lockup which would imply electronic shutter, I think.
  - actionfromafar 2y ago
    The shutter is separate on DSLR. (And SLR.)
Clamchop 2y ago
Good point. More recent mirrorless interchangeable lens cameras can disable the physical shutter and use only the electronic shutter, which would relieve this problem.
choilive 2y ago
The specific camera model doesn't seem very important its probably whatever they had on hand - presumably you could just replace it with a camera with an electronic shutter and as long as it has the same remote shutter port you could take many millions of exposures.
_Microft 2y ago
From the article: "To minimize jitter of the system, and to enable 22 shots per minute, the mirror must be moved into the permanent up position." This makes it sound like they are using an electronic shutter instead which circumvents the lifetime issues.
- throwaway22032 2y ago
  The mirror being up likely refers to the viewfinder mirror. I haven't used a DSLR, only mirrorless, but I wonder if that could be independent of the shutter.
  - _Microft 2y ago
    That's exactly the mirror that gives (D)SLR's the R ("reflex") in their name. It's in the path between sensor and lens and redirects the image towards the view finder. When taking a picture this mirror moves out of the way and the image is projected on the film/sensor instead. The advantage of that system is/was that the photographer can preview the image as it will get captured.
    - throwaway22032 2y ago
      Ah, so there's no shutter at all then? As in, the mirror itself forms the shutter? For some reason I figured there were both. Makes sense I guess.
      - ginko 2y ago
        There is a separate shutter.
      - RobotToaster 2y ago
        No, in most* cameras there's still a shutter behind the mirror, the mirror can't move that fast so would limit the top shutter speed too much. *The Ihagee Exa is the only one I know of that used a mirror guillotine shutter.
cladopa 2y ago
I have other canon cameras that could be used with the shutter opened and digital acquisition with Magic Lantern via USB(with hacks). But today I believe it is much better to use Digital cameras like the Raspberry Pi HQ cameras with good lenses. You don't need hacks, and the sensors come from recent mobile phones modules that have much better quality and technology than old camera digital sensors.
- buck746 2y ago
  The lenses you can get for an SLR tho are much better than what rPi cameras usually come with. If you use film era fully manual lenses you can get amazing quality for next to nothing. If your shooting objects that are still, taking longer exposures or exposure brackets is trivial. I wish there was an GUI program for tethered cameras that still had an option to capture multiple frames each time you trigger it and average them for an output frame. It's strange that feature was removed, in the SD video era there were lots of options for that.
throwaway22032 2y ago
I don't know about the Canon 1000D but almost all cameras I've used recently have electronic shutters. There is a rolling shutter penalty so you wouldn't want to use it in the "real world" for moving subjects but if you synchronise it properly (e.g. move one physical frame, take photo, move one physical frame) and ensure that there is no movement during the exposure then this shouldn't make a difference. Even the worst culprits like a 61MP mirrorless (huge overkill for this task) with ~100ms readout could trivially keep up with 22 shots per minute.
- _Microft 2y ago
  They are advancing the film one frame at a time and are taking static images. There's a switch getting actuated that triggers image capture once the film has advanced. The first video in the article has close-ups of the process.
google234123 2y ago
A mirrorless camera can probably be found used for 200$ so that would be better
flipthefrog 2y ago
The older Standard 8 format used 16 frames per second. Super 8 is 18 or 24 fps

by jshipc 2y ago

actionfromafar 2y ago

The article does not mention this, but many Canon (and I assume other brands) have an option to use only the electronic shutter. For a non-moving subject such as this, it's the perfect option. But it's a good caveat to consider when doing such a project.

snypher 2y ago
They talk about shutter lockup which would imply electronic shutter, I think.
- actionfromafar 2y ago
  The shutter is separate on DSLR. (And SLR.)

Clamchop 2y ago

Good point. More recent mirrorless interchangeable lens cameras can disable the physical shutter and use only the electronic shutter, which would relieve this problem.

choilive 2y ago

The specific camera model doesn't seem very important its probably whatever they had on hand - presumably you could just replace it with a camera with an electronic shutter and as long as it has the same remote shutter port you could take many millions of exposures.

_Microft 2y ago

From the article: "To minimize jitter of the system, and to enable 22 shots per minute, the mirror must be moved into the permanent up position." This makes it sound like they are using an electronic shutter instead which circumvents the lifetime issues.

throwaway22032 2y ago
The mirror being up likely refers to the viewfinder mirror. I haven't used a DSLR, only mirrorless, but I wonder if that could be independent of the shutter.
- _Microft 2y ago
  That's exactly the mirror that gives (D)SLR's the R ("reflex") in their name. It's in the path between sensor and lens and redirects the image towards the view finder. When taking a picture this mirror moves out of the way and the image is projected on the film/sensor instead. The advantage of that system is/was that the photographer can preview the image as it will get captured.
  - throwaway22032 2y ago
    Ah, so there's no shutter at all then? As in, the mirror itself forms the shutter? For some reason I figured there were both. Makes sense I guess.
    - ginko 2y ago
      There is a separate shutter.
    - RobotToaster 2y ago
      No, in most* cameras there's still a shutter behind the mirror, the mirror can't move that fast so would limit the top shutter speed too much. *The Ihagee Exa is the only one I know of that used a mirror guillotine shutter.

cladopa 2y ago

I have other canon cameras that could be used with the shutter opened and digital acquisition with Magic Lantern via USB(with hacks). But today I believe it is much better to use Digital cameras like the Raspberry Pi HQ cameras with good lenses. You don't need hacks, and the sensors come from recent mobile phones modules that have much better quality and technology than old camera digital sensors.

buck746 2y ago
The lenses you can get for an SLR tho are much better than what rPi cameras usually come with. If you use film era fully manual lenses you can get amazing quality for next to nothing. If your shooting objects that are still, taking longer exposures or exposure brackets is trivial. I wish there was an GUI program for tethered cameras that still had an option to capture multiple frames each time you trigger it and average them for an output frame. It's strange that feature was removed, in the SD video era there were lots of options for that.

throwaway22032 2y ago

I don't know about the Canon 1000D but almost all cameras I've used recently have electronic shutters. There is a rolling shutter penalty so you wouldn't want to use it in the "real world" for moving subjects but if you synchronise it properly (e.g. move one physical frame, take photo, move one physical frame) and ensure that there is no movement during the exposure then this shouldn't make a difference. Even the worst culprits like a 61MP mirrorless (huge overkill for this task) with ~100ms readout could trivially keep up with 22 shots per minute.

_Microft 2y ago
They are advancing the film one frame at a time and are taking static images. There's a switch getting actuated that triggers image capture once the film has advanced. The first video in the article has close-ups of the process.

google234123 2y ago

A mirrorless camera can probably be found used for 200$ so that would be better

flipthefrog 2y ago

The older Standard 8 format used 16 frames per second. Super 8 is 18 or 24 fps