Thank you much for your answer! That made it clear to me. i guess too there will only be a kind of software binning. in the data sheet of the chip ( Sony IMX477 / www.sony-semicon.co.jp/products/common/p...MX477-AACK_Flyer.pdf ) is Binning listed in the features. but no word if hardware or software based. well no benefit here for me :) i sometimes forget that this is NOT a SBIG camera for 5000$ ;)
later this day, i will play a bit with the options in the webcam driver - maybe i can make the cam with it a bit more useful and fix the exposure time bug.
(i noticed that even the indi_rpicam does not react to different expsure settings in PHD2 - maybe there is the BUG)
i will update as soon i figured it out where the problem lies.

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