High ISO performance with the 5D Mark II
Last night I was experimenting with the higher range of ISO’s on the 5D Mark II. As a previous owner of the original 5D, I can say that the improvement in sensitivity versus noise is significant. It’s still not a Nikon D3, but it’s very useful. ISO 3200 is very usable, and I’ve made a few images at ISO 6400 that are not objectionable, but do lack some detail. From my experience over the past month and a half, I think ISO 4000 represents the best compromise in terms of high ISO and preservation of detail.
Below is a photograph captured with the 85mm f/1.8, exposed 1/200 sec. @ f/1.8, ISO 4000

Watching darts with a candy neck tie, McNally's Irish Pub, 22 Feb. 2009, Columbia, Mo.
And for the pixel peepers, a 100% crop from her face (after the jump)…



