DIY, 8mm film scanner Kotokino Mark IV (2020)
1–10 of 37 posts
Re: DIY, 8mm film scanner Kotokino Mark IV (2020)
#2I was hoping for a sample of the footage being captured, but I don't see any on their blog.
Re: DIY, 8mm film scanner Kotokino Mark IV (2020)
#3I was hoping for a sample of the footage being captured, but I don't see any on their blog.
There's an embedded mkv file that I suspect most browsers won't play inline but you can download it and play w/ VLC.
http://www.sabulo.com/sb/wp-content/uploads/2020/03/0001-026...
Re: DIY, 8mm film scanner Kotokino Mark IV (2020)
#4Various 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.
Re: DIY, 8mm film scanner Kotokino Mark IV (2020)
#5Various 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.
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.
Re: DIY, 8mm film scanner Kotokino Mark IV (2020)
#6Various 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.
Good point. More recent mirrorless interchangeable lens cameras can disable the physical shutter and use only the electronic shutter, which would relieve this problem.
Re: DIY, 8mm film scanner Kotokino Mark IV (2020)
#7Various 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.
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.
Re: DIY, 8mm film scanner Kotokino Mark IV (2020)
#8Various 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.
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.
Re: DIY, 8mm film scanner Kotokino Mark IV (2020)
#9Various 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.
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.
Re: DIY, 8mm film scanner Kotokino Mark IV (2020)
#10Various 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.
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.