automatic long exposures not working on 64MP/Hawkeye cam (?) #88

Hello! :)

I'm planning a timelapse where, during the night, I'll have a lot less light (obviously). So I need my camera/script to automatically dip into the seconds range. Currently, I'm stuck a 1/8th of a second for whatever I do. I can do it manually, however, with the results I wanted.

I tried adding a lot of different options with the libcamera-still command as well but it just doesn't want to go below 1/8s. Is this intentional or is this unexpected behaviour? For me, a customer, it's unexpected since the 64MP Hawkeye supposedly supports up to 435s of exposure time and I think there's no mention of libcamera not being able to go to a couple of seconds.

I'm using a headless Raspberry Pi 4B and followed the guides on the ArduCam website for setting it up.

Greetings,
Nils