Quote Originally Posted by Jonathan Huyer View Post
...I believe the High ISO speed NR impacts JPEG files only (please correct me if I'm wrong here). I just leave it on the default setting but I shoot in Raw only, and do my own noise reduction with Lightroom.
Thanks for the response. I agree on the first point, and I just leave long exposure NR off. But I was not sure if the high ISO NR effected RAW or just jpeg. I made the assumption it only effected jpeg's so I left it off, and assumed I would take care of it in post (I only shot RAW). Looks like I guessed correctly (I will confirm this to be the case with the manual).

Again, thanks for sharing your knowledge.

Pat