Digital BW, The Print

On 07/01/2011 03:13 PM, Bob Rapp wrote:

>              On the subject of scanning BW, I add Photoshop to the workflow.
> In Photoshop, I normally turn off the R and B channels and use the
> desaturated green channel for final output. Another technique I may use is
> to kill the red channel, add blur to the blue channel and sharpen the green.
>
>              Of course, everyone's workflow will be different based on their
> perception of the desired output.

Bob,

Interesting, I was actually doing the RAW road to see whether I could 
get better color control on reflective scans and shortly after that to 
see whether it would be possible to do deconvolution sharpening in ACR 
on B&W film scans. The noise reduction in ACR is not intended for 
(aliased) film grain so I do not expect a good result for that. Normally 
I use Neat Image in PS4 and that is quite good, better than what I got 
from Vuescan's own noise reduction. In a way I need good grain reduction 
and deconvolution sharpening in that order or possibly at the same time. 
It is possible that a split color route made from the RAW could be an 
answer in this case. Is the green channel the sharpest or is it a 
compromise between the red and the blue, the last sharper but noisy? I 
know that Vuescan's B&W routine favors the green channel in the 
conversion. I have a suspicion that the Epson V700 scanner optics are 
diffraction limited and would like to try a deconvolution sharpening 
directed to reverse that effect. Not covered in ACR. Just curiosity. My 
Nikon 8000 is very different so could use another approach.


-- 
Met vriendelijke groeten,   Ernst

Try: http://tech.groups.yahoo.com/group/Wide_Inkjet_Printers/

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