A77 Raw ACR comparison in PS CS5.5 with a Noise Ninja example

Taken from the DPR RAW files at 3200. PS CS5.5 with ACR 6.5.

With zero color noise reduction

With the default value of 25

With zero color noise reduction and Noise Ninja 2.x auto correct settings

With a slight curve applied or contrast adjustment the results look even cleaner.