These tests are similar to those I have done on the Nikon D3 and on my Canon 5D. Please see those pages for the methodology.
Much of the methodology for these tests is based on work by astronomer Christian Buil and space scientist Roger Clark. I am grateful to Roger Clark, Mike Unsold (creator of ImagesPlus software) and Dave Coffin (creator of dcraw software) for useful email correspondence. They are not however responsible for any mistakes I may have made.
I am grateful to George Hollingbery for allowing me to swap my 5D with his 1DsII for a fortnight so I could do these tests. Although it may seem a bit late in the day, given that Canon has already produced a 1DsIII, I say "better late than never".
I took quite a few measurements and it will take time to write them up, so watch this space...
If you have trouble printing any of these pages, and find that tables are clipped or the text within them gets jumbled up, try the following:
You can contact me using the email address below (which you won't see unless you have Javascript enabled)
© Peter Facey, Winchester, England
20080308 originated