I do all my work in raw. Today I had to use ISO800 because of low light, slow shutter, and an aperture of 11.0.
I processed the file in LR 2.7 as usual and did not like the results. I then tried the new ACR 6.1 which uses the same noise reduction engine as will be in LR 3.0. It is supposed to be much better. I compared the images at 100% and the ACR conversion was miles better. Much smoother, no mottling, with only a slight loss in detail.
Attached are the comparisons at 100% and a overall of the image. The ACR is first. You might not be able to see the differences on screen, but they are there and I am impressed. Can't wait for LR 3.0
The image from a Tokina 90mm 2.5 macro and is almost 1:1 using converter. With Pana G1.