Hello,

I work in black and white photography, most of my images are about subtle
tone distinctions,  especially in the very deep end, what we used to call
threshold density or zone I to II.  I have been struggling with a series
of so called RGB ink-jet printers especially the Epson Stylus series,
10,000, 9600, 7,500 5,000 etc, usually with dye ( non archival ink)
wherever possible, forfeiting longevity for brilliance.

My question has to do with the compression of file data during the
conversion to the output profile .

How does Perceptual rendering,  which maps black and white to the
destination space and compresses all the file  data accordingly and Black
Point Compensation, a function which Adobe provides to prevent clipping of
data beneath a device�s maximum shadow point,  work together without
conflict or redundancy, or do they?

And finally, if one or both of these functions is operating properly, why
am I still frequently  obliged to manually target  files to the maximum
shadow and minimum highlight points of the printer-ink-paper combination?

Any help understanding this would be greatly appreciated.

Thank you

Paul Lowry


-- 
>>Paul Lowry

>>Academy of Lagado
>>Lower Laurentians,Canada

>>www.paullowry.com

>>[EMAIL PROTECTED]



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