I don't know exactly what you mean by a "JPEG scheme", but theThat is not the truth, Nikon is softer since they don't have a very good
jpeg scheme otherwise it would be impossible to explain why jpeg
out of PS7 is sharper even with the same file size.
JPEG encoding engine (if this is what you are talking about) can't
be responsible for the softening of the images when you compare them
to RAW. This encoding is well standardised, and there is only one
correct implementation. Varying the amount of compression
introduces artifacts that look totally different.
The blurring must be due to some step in the chain prior to JPEG
encoding. Several things happen before, e.g. the Bayer interpolation.
I agree with you that, since Nikon offers three levels of sharpening,
at least the highest sharpening should be similar to what you get from
e.g. a Fuji S2. So, in my opinion, the real problem of the D100 is not
that the images look soft with the default settings, but that the
sharpening filter that is used in the higher sharpening settings is lousy
and is inferior to what is found in other camera's.
If Nikon should improve something on the sharpening in a firmware
upgrade, it should be a better sharpening filter in the high sharpening
mode. That would at least make the people happy that refuse to do
post-processing.
Personally, I prefer to save JPEGS without sharpening, and use an
advanced filter afterwards. I believe this allows one to rival RAW,
at least in terms of sharpness.
Vtie
PS Did anybody compare the high sharpening mode between
firmware 1.01 and 2.00 ?