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Digital BW, The Print

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Re: True Grayscale (monochrome) or RGB Black & White?

2008-09-04 by eyewall

Hi handyman856,

If you print an image using QTR (regardless of the program it is printed from), the image 
is always converted to 8-bit grayscale. If it was already in grayscale (from grayscale mode 
in photoshop) it leaves it as-is. If you use the grayscale conversion tool in the develop 
module of lightroom, it does (as you said earlier) remain as RGB. But it doesn't matter 
since QTR will just convert it to 8-bit grayscale anyhow.

P

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "handyman856" <avr@...> wrote:
>
> It seems there are a number of ways to get a BW image from color. I'm
> aware of most of them, and am not asking HOW to do it.
> 
> In Photoshop you can create a true grayscale image which drops all RGB
> channels and has only a 'gray' (luminance?) channel. In Lightroom, you
> can create a grayscale image, but it appears to retain the RGB
> channels. Other techniques also use the RGB channels as filters to
> create a BW image (Lots of controls in the color channels).
> 
> The question is: For =good= BW printwork, should the final image sent
> to the printer be a TRUE, single-channel grayscale image, with no RGB
> info? I like working in Lightroom, but I would need to take the image
> to PS to make it a singe-channel true (by my def) grayscale image. Is
> this worth doing? Or will the printer/QTR figure it out?
> 
> I'm setting up a Epson 1400/QTR/Piezo printer, and they indicate you
> should only print grayscale. So I'm looking for clear definition of
> grayscale. 
> 
> Clear (gray?) as mud??
> 
> =Alan R.
>

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