Interesting...

I had seen this value but I missed a digit and thought that it was 1s instead of 0.1s so I coded the max to 1s (by hand, not using maxExposure() ) and the result clearly shows that the resulting image with 1s exposure is brighter than the image with 1/10s exposure. (Also it is visible on-screen that the frames last for more than 0.1s - frames on screen are just regular frames, only 854x480 instead of 8MP) On the other hand there may be the explanation why really low light images are darker in the resulting image than in the viewfinder, but it still doesn't explain why 1/1 is brighter than 1/10. If the camera somehow capped the exposure, all photos above 1/10 should look the same.