That's exactly what the DS' NR does: dark frame subtraction. It must operate on sensor data to be effective. :-)
Godfrey On Nov 6, 2006, at 8:11 PM, Michael Abbott wrote: > Wow that's interesting. I'd assumed, seeing NR in the menus, that it > only applied to jpegs. > > Do you know what it's doing? Presumably shooting another frame with > the curtains closed and subtracting, as anything else would make more > sense to do afterwards when 'developing' the raw file. > > Michael > > > On 06/11/06, Godfrey DiGiorgi <[EMAIL PROTECTED]> wrote: >> The DS' Noise Reduction kicks in at around 1/8 second or so. >> >> Here's a comparison picture of NR on and NR off offers for a 30 >> second exposure, processed from RAW with both Vuescan and Camera Raw: >> http://homepage.mac.com/godders/straight-NR-comp.jpg >> >> I'll have to go back through my archive to get the EXIF data for #s >> 6194 and 6193 PEF files. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
