francis ware wrote: > > -- > > I am using a D1x for the first time and am having trouble getting a > satisfactory image. I am trying to photograph some art work and want > to get the whites sorted out so that I can shoot all the pictures > under the same condition. I am using the raw file format and have > done a white balance preset according to manual. All exposure, > lighting etc spot on. Problem is when opened in Ps the image looks > about 1 stop underexposed (but when shot at 1/2 under important > detail is lost). > I want to be able to reproduce whites acurately without making > adjustments in PS. >
not sure anything about your camera or the software it could relate to my experience with my leafscan 45 scanning 'raw' in that scanning raw means just that - no adjustments to the sensitivity of the ccd ...that means that very few trannys and no negs have anywhere near the range of brightness that the scanner can record. ....this is a true 16 bit scan and I doubt that the DIX records so high ....all the same, it, I expect is at least a real 14 bit which means that it contains a lot more greyscale data than your final image will . in the case of the leaf - if, for example, the range of a neg is 1/15th of the range of the scanner - all those tones will occupy a small chunk equal to 1/15 of the range from pure black to white. 1/15 of a full greyscale is a very small range of brightness and this scanned image ( before adjustment) appears almost pure black when openned in PS adjustments in PS bring up the limited negs brightness to match the black on the neg being black and the white being white (I am throwing away all the shades that my scanner could have recorded though that is no biggie, because these did not exist and therefore contained no data whatsoever from the neg). because the image is 16 bit at that stage, this dramatic adjustment does not hurt the remaining image which 'still' has many more than 16million colors/shades (1/15th of 16 bits is many more than. what you may be experiencing is the same stuff - albeit that your image occupied more than 1/15th of the range and therefore is not seen as so dark when you open in PS if you are really recording real unadjusted 'raw', and you dont want to adjust further in PS then what I guess you want to do is simply stop what you are doing - 'dont save raw' - find or pay for some profile that you use in camera to save a 'corrected file' this may be only part of what happens as 'raw' format (for all I know) not really be raw everyone - excuse my usual failure to exercise communication skills hope that helps a bit all the same philip =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
