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Hi Humayan,
Yes, I indeed checked those setting which were disabled. I've also played with all those combinations on my own camera. While they all make some difference, the only one (on my camera at least) that really makes a noticab le difference is the long exposure noise reduction. Infact the in camera routine does a decent job in removing a lot of that red & blue noise in my samples. However when you've got limited time to image your lights doubling each light exposure chews up valuable time while the object still remains in view. So of course I'd prefer to use darks and take them imediately after my lights are done.
While I found it hard to believe that there could be such variation between cameras, Fiona's results seem to back up the extensive reviews posted on Gary Honis's site that I referenced earlier - and the general consensus that the 500D does a decent job of dark frames.
I think I'm the odd one out here.
Cheers
David
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