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Problem with any non-mass-produced camera seems currently the availability of image sensors. It seems that the only small-batch available sensors are for machin

by sottol 3y ago

Problem with any non-mass-produced camera seems currently the availability of image sensors. It seems that the only small-batch available sensors are for machine-vision and accordingly priced :/ The CMV12000 used here costs $2000-$2200 per sensor - more than many full-frame mirrorless cameras. Another problem is that there are no development boards as far as I'm aware. That's why this imo could be huge for anyone else interested in making an open camera, the apertus project seems to have a modular architecture and breakout board for components! That said, the sensor does have a globoal shutter which would be huge for cinema but not sure at what tradeoffs in dynamic range or color-depth eg.

creer 3y ago
Are broken full-frame cameras becoming available? Where large sensors might be sourced from? I see quite a few sensors available on ebay. Problem then might be getting specs.
immmmmm 3y ago
For a global shutter sensor that big that seems kind of reasonable. Been buying smaller sensors, building multi camera machines, for researching projects and I like that thing. Open hardware, i wish I was doing cinema to buy that thing, gorgeous!
- dorfsmay 3y ago
  Do you write your software to use the small sensor from scratch or do you build on top of existing libraries?
  - immmmmm 3y ago
    i used MIPI sensors on jetson, and while the drivers were provided by the manufacturer we wrote a a python/c++ library based on V4L2 to acquire images
logtempo 3y ago
You're correct, but if a company invest money in this project, just like all big open-source projects, it can work.
twobitshifter 3y ago
Here’s another project using a more affordable full frame kodak ccd with global shutter https://www.diyphotography.net/the-sitina-1-is-a-full-frame-open-source-mirrorless-camera/ https://www.diyphotography.net/the-sitina-1-is-a-full-frame-... https://gitlab.com/zephray/sitina1 https://gitlab.com/zephray/sitina1 https://m.youtube.com/watch?time_continue=1&v=Ma9FrN5COIo https://m.youtube.com/watch?time_continue=1&v=Ma9FrN5COIo Some people like ccd better than cmos for the color range.
mikepurvis 3y ago
Global shutter is pretty desirable for machine vision applications like robotics, especially if that shutter is also externally triggerable on a gpio pin so that you can perfectly sync up all your cams.

by sottol 3y ago

creer 3y ago

Are broken full-frame cameras becoming available? Where large sensors might be sourced from? I see quite a few sensors available on ebay. Problem then might be getting specs.

immmmmm 3y ago

For a global shutter sensor that big that seems kind of reasonable. Been buying smaller sensors, building multi camera machines, for researching projects and I like that thing. Open hardware, i wish I was doing cinema to buy that thing, gorgeous!

dorfsmay 3y ago
Do you write your software to use the small sensor from scratch or do you build on top of existing libraries?
- immmmmm 3y ago
  i used MIPI sensors on jetson, and while the drivers were provided by the manufacturer we wrote a a python/c++ library based on V4L2 to acquire images

logtempo 3y ago

You're correct, but if a company invest money in this project, just like all big open-source projects, it can work.

twobitshifter 3y ago

Here’s another project using a more affordable full frame kodak ccd with global shutter https://www.diyphotography.net/the-sitina-1-is-a-full-frame-open-source-mirrorless-camera/ https://www.diyphotography.net/the-sitina-1-is-a-full-frame-... https://gitlab.com/zephray/sitina1 https://gitlab.com/zephray/sitina1 https://m.youtube.com/watch?time_continue=1&v=Ma9FrN5COIo https://m.youtube.com/watch?time_continue=1&v=Ma9FrN5COIo Some people like ccd better than cmos for the color range.

mikepurvis 3y ago

Global shutter is pretty desirable for machine vision applications like robotics, especially if that shutter is also externally triggerable on a gpio pin so that you can perfectly sync up all your cams.