Digital BW, The Print

I agree though that for each colour managed line I should have plotted the
L* expected by the colour patch given my workspace against the actual
achieved, rather than the "step vs the L*" - I agree the step is no longer
valid - and compared this against the linear line of the non colour-managed
output.  


>>I was principally concerned with comparing the GM colour
>> profile vs the QTR create ICC profile.  The point was to do a very
>> rough
>> cross check on your BPC and to show that the sort of impact at the
>> black end
>> of the scale of the QTR Create ICC profile is consistent with what
>> a GM HPR
>> colour profile does, ie it would appear to be behaving correctly.
>> (I was
>> disappointed the Epson colour driver did not get the same min L* to
>> make the
>> comparison more direct.) A great deal of comfort is gained if we see a
>> performance consistent with the colour community's widely deployed
>> colour
>> management.