It was ISO 100. The camera is mounted on a tripod, with 2 sec shutter delay to eliminate mirror blur. SR was turned off.
If you read my earlier post, I did say I was using the 43mm limited at f1.9. I also mentioned it was dimmed halogen lighting.
There were no other sources of lighting. This is our home theatre room with a projector, so perfect darkness can be achieved at any time of the day.
I don't have an EV meter, so I haven't quoted EV numbers. But since I have given some indication of exposure time and lens used, I am sure you can work out the approximate EV.
Let me repeat - the only conditions under which I can get the K-5 to FF were the same conditions that the EOS-1D will not lock focus at all. It is near dark and my eyes can't even focus properly under those conditions.
Under conditions where the Canon was able to lock focus, the K-5 did not exhibit FF. These are still pretty dim conditions with the lights mostly dimmed - I would not be able to read a book.
Once again, my apologies for not giving the EV numbers that you require since I don't have a meter.
Again I stress, the results are for my K-5 (on one lens) and I can't speak for other K-5s out there (or even other lenses). Based on the results, I don't believe a fix is required for my K-5 - I can't say for certain whether that is true for all K-5s.
Last edited by Christine Tham; 02-05-2011 at 02:57 PM.