Digital BW, The Print

I think the problem with this and many other techniques (including Jeff
Schewe's working with individual channels in layers) is that they can't be
done in 16-bit mode.  Almost all the files that I work with in photoshop
(either a RAW digital file or scanned film files) are available in 16 bit
mode.  This seems to be one advantage for working in the channel mixer or
just using straight grayscale conversion.  It's ironic that Jeff, who is a
big proponent of 16 bit workflows, suggests a non-16-bit BW conversion
methodology.  I'm curious to know whether anyone has compared these
methodologies in actual prints...is there a loss of tonal quality using one
of the non-16-bit workflows vs. just using the channel mixer on a 16 bit
file...and the critical issue is...can you see the difference in the actual
print. It doesn't seem that these methodologies are actually remapping
values...like a curve or level adjustment...but you have obviously given up
the 16 bit data...so if you then wanted to do a curve or level adjustment
you would be out of luck.

Robert

done On 8/2/02 6:24 AM, "Shire,Stanley" <sshire@...> wrote:

> There is, I believe, a better way to convert RGB to grayscale than with
> Channel Mixer. Russell Brown has a nice pdf tutorial and video on his
> web site. 
> http://www.russellbrown.com/body.html
> 
> 
> Stan Shire
> Associate Professor/Department Chair
> Photographic Imaging
> Community College of Philadelphia
> Adobe Photoshop 6 A.C.E.
> 
> 215 751-8320
> <mailto:sshire@...> sshire@...
> -----Original Message-----
> From: Truman Prevatt [mailto:tprevatt@...]
> Sent: Friday, August 02, 2002 8:54 AM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: Re: [Digital BW] Adobe Channel Mixer versus Picture Window 3.1
> 
> I would go with PW Pro. I have Photoshop and use it some. But PWP is
> much more intutive and easier to use. There may be some functionality in
> 
> Photoshop not in PWP, but from what I have found you won't need it very
> often if at all. The good news is PWP is fully functional on 16 bit
> data. Not even Photoshop can claim that.
> 
> I think the Pro version for I think $89.00 is a better deal the regular
> version. At least that was the conclusing I came to some time back.
> 
> Truman
> 
> steve1t wrote:
> 
>> I'm having a ball learning to use Photoshop Elements.
>> But, one feature that Adobe left out of the "Elements"
>> Version of Photoshop is the Channel Mixer. I can
>> already see that this is a very powerful tool for digital
>> b&w work. I want it! Reality is I'm retired on a fixed
>> income. The full version of Photoshop is a lot of money
>> for a lot of features I'll never use - or am I being a
>> "penny wise and a pound foolish?"
>> 
>> Anyway, Picture Window, by Digital Light & Color,
>> claims some pretty sophisticated filtering capabilities.
>> Does Picture Window 3.1 allow one to manipulate b&w
>> RGB images like Photoshop's channel mixer?
>> 
>> Would Picture Window compliment Photoshop Elements
>> or be redundant? At $49.95 it looks like heck of a buy.
>> 
>> Thanks,
>> stephentucker@...
>> 
> 
> 
> 
> 
> 
> 
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