Our forum user cantsin has found a wonderful open source camera project that sounds very exciting: The "CinePi" project by Csaba Nagy can turn a Raspberry Pi 4 with the PiCAM into a 2K 12bit CinemaDNG camera.
You need a Raspberry Pi 4 with at least 4GB RAM (approx. 60 euros), the High Quality Camera module (approx. 60 euros), an HDMI preview monitor and a fast USB SSD like the Samsung T5.
The Sony IMX477 sensor used is approx. 6.28mm wide and thus offers a horizontal crop factor of 5.7 behind a C/CS mount. This means that it is already close to the Super8 format. Perhaps this could be boosted to near Super16 with inexpensive focal reducer tinkering.
It is also interesting that the camera can be adjusted via Bluetooth using the Blackmagic camera app. Finally, you can edit the CDNG-RAW material from the SSD in the free version of Resolve, for example.
If you seriously want to shoot a film, you probably won't go for a hobby solution like CinePI. On the other hand, anyone who wants to learn something about camera technology and signal processing should be able to discover a lot that is instructive here. Especially since this RAW camera can be assembled by almost anyone without soldering skills.
Csaba Nagy has already put the first clips of the CinePI online:
