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Digital BW, The Print

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Re: [Digital BW] Re: 720 v. 360 ppi to Epson desktop, No output quality differences for me.

2004-11-13 by Bob Frost

Phil,

I seem to remember Kennedy McEwan saying that the basic interpolation method 
of Epson drivers seemed to be Nearest Neighbour, but that newer drivers 
often had a DCC box that could be checked (Digital Camera Correction) to 
switch to some other interpolation (Bilinear probably) that would reduce 
jaggies on low MP pictures.
I think he said it was perfectly easy to check whether the driver is using 
Nearest Neighbour (NN) - just make an image of black and white squares and 
print it. If the squares have nice sharp edges in the print, it is using NN. 
If the driver is using Bilinear or Bicubic, the edges will have been 
softened.

Bob Frost.


----- Original Message ----- 
From: "Phil Rose" <pjrose@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>


Finally (for anyone coming in late to this thread), if anyone
resamples to 720 in Photoshop using the nearest-neighbor interpolation
rather than something like bicubic (or better) then there'd be no
reason at all to expect improvement over letting the driver
interpolate. That, of course, assumes the Epson driver uses nearest
neighbor interpolation, which is a supposition that could use some
"authoritative support". As we know, Mike Chaney (Qimage) is one
source of support for that supposition.

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