My first pic with the raspiCam featuring my 1946 wurlitzer as the model.
I found the exposure compensation to be a bit awkward to play with . However the only real problems I found was it could be easily blinded by strong light in the picture and thus the rest of the picture would be very dark in comparison. Obviously this is the same with all sensors but this was more obvious may be due to it's size ?!
Have you worked out a rought exposure time/ISO correlation for the sensor?