Ok I was too intrigued to wait until tomorrow. Just tested and, yes, when you disable Canon RAW you can get .dng image. I'm not aware this difference between the S95 and G11 is captured on the CHDK web site. Or is it?
BTW is the EXIF data above sufficient, or do you wish me to upload a .dng from each camera to answer lapser's question?
Could you point me someone/somehow I can upload two DNG files to you?
I hope you can get at these files?
On my viewer, it looks like the G11 has a black line at the top that isn't present on the S95. I'm not sure if this is the problem, but I am sure philmoz will figure it out.
There are a lot of little dots scattered throughout both images that look a little like hot pixels. Was this an ETTR image? I wonder if overexposing with ETTR is producing hot pixels. This might be something to investigate. What was the shutter time for the images?
The two DNG exposures were nominal, at 0Ev.
It all a question of how careful the person doing the original port was about setting CAM_ACTIVE_AREA parameters. What you are supposed to do is start with the raw sensor size, take an image, and figure out what part of the sensor area is masked out, and then reduce the CAM_ACTIVE_AREA appropriately. Sounds like the G11 port was a few pixels off - or maybe the mask variation from camera to camera is enough to cause differences in the actual active area ?
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