OK I have read the links information and accept that images in jpeg will suffer some degredation particularly in highlight and shadow areas, 8bit v 16bit.
Management has as signed off a spend on a new PC but not new imaging software.
Done with reading today as there is only so much you can take on board in one session.
Rummaged for a suitable RAW file that I could do a straight conversion on to TIFF 16bit, and JPG 8bit. We have already been down the route with D100 in camera processing of JPG's and have failed to see much missing info. So although not strictly scientific it would do for a first pass. Easy, pixel peep them at 300% and differences will be quite obvious. I was concentrating on the white areas as I was now expecting quite obvious differences in this area.
NOT SO.
It may be my screen as I have not been printing them, I do not know. Adding more than a touch of USM does visibly start to chuck out very fine detail in very light areas. More research needed. I do not have a bird image with fine feather detail that should theoreticaly show the differences easily.
I am attaching the full frame and a crop of the mill top. The crop is 289kb in order not to degrade it with compression.
Don
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