Hello Marc, I can't speak specifically to your d3, but generally speaking some variation of software noise reduction is applied to the jpegs when shooting these smaller cameras at higher iso's that wouldn't be applied to the RAW files. You would have to experiment to confirm this for your specific camera, obviously. The upside of this is that when processing the RAW file you can choose whether to noise reduce the image or not and you can reach for a range of noise reduction filters on the market for Photoshop and other programs and fine tune how much or how little mucking around the image they do in order to get the job done. The in camera algorythyms can sometimes get a bit brutal, which is generally effective, but it can't know whether it needs a little or a lot. Richard ________________________________ What Would Scooby Doo? ~•~ It's okay to be stupid just don't be gung-ho about it. ________________________________ ________________________________ From: Marc Dufour <foto@xxxxxxxxxxxxxx> To: leicareflex@xxxxxxxxxxxxx Sent: Monday, September 28, 2009 8:32:10 AM Subject: [LRflex] Re: The Silk String Quartet Salut Philippe, Thank you so much, amigo. If you want, I can send you some music from them. About the high ISO, I've to say the JPG file is cleaner than the RAW one (with more noise). I just realized it after upload the 3 first pictures :-( Amitiés de Castellón sous la pluie. Marc >