Digital BW, The Print

hey folks, it's well documented what the RGB combo is they use for
straight grayscale conversion, I can't recall what it is though, it's
a mix. I'm sure someone here knows...
Tyler
http://www.custom-digital.com/

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Eric Neilsen"
<e.neilsen2@...> wrote:
>
> Lincoln, I understand were not arguing, just stating observations.
When I
> did my test of the screen capture done two ways; 1) using the convert to
> gray and screen capture that and 2) show only the red channel and screen
> capture that. I got two very different results. And I'd love to see an
> attributable adobe source that states that grayscale uses red
channel only
> or as ??? suggested a % of R, %G, and small % B. 
> 
>  
> 
> I rarely use the convert to grayscale unless I'm in a hurry. Each
conversion
> is specific to that image and what you want to do just as with each
camera
> exposure can have a red filter or orange filter or.
> 
>  
> 
> I have seen several people suggest that PS has a better conversion
of RGB to
> grayscale than does the scanning software, but I have not seen them
mention
> published test that show this. I have seen Epson and Imacon side by
side at
> demo events and they would NOT make the best scan they could and
show the
> difference. Why? Could it be that much of it is operator experience
and an
> equal part software/hardware driven? Could have simply been time.  
> 
>  
> 
>  Eric
> 
>  
> 
>  
> 
> Eric Neilsen
> 
> 4101 Commerce Street, Suite 9
> 
> Dallas, TX 75226
> 
> 214-827-8301
> 
>  
> 
> www.ericneilsenphotography.com
> 
> SKYPE ejprinter
> 
>  
> 
> From: DigitalBlackandWhiteThePrint@yahoogroups.com
> [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of
outdoornm
> Sent: Tuesday, January 06, 2009 4:34 PM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Re: B+W Scans from RGB Scanners
> 
>  
> 
> Eric,
> 
> I'm not arguing that direct grayscaling is the best method. I am just
> stating what the 
> default is in my CS2. If you do the check I mentioned it will show
you that
> is exactly the 
> case. I have also read it elsewhere, but I can't find reference to it at
> this point. You guys 
> need to come up with some authentication for your opinion- it sounds
to me
> like you just 
> think it is improbable. 
> 
> Personally, I choose to use direct grayscale because you can drive
yourself
> crazy seeing 
> what tweak works the best using channel mixer. I have found it much more
> effective to 
> convert to grayscale directly Image>mode>Grayscale and then work on the
> image in 
> curves. I find it gives me much more control. You wouldn't think so,
but for
> me, it does. 
> Like anything in Photoshop there are many ways to achieve what you want.
> 
> Regards,
> 
> Lincoln
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com
> <mailto:DigitalBlackandWhiteThePrint%40yahoogroups.com> , "E Neilsen"
> <e.neilsen2@> 
> wrote:
> >
> > If you have PS CS3 or CS4 why would you even consider just hitting
> > mode>grayscale when you could convert to B&W with image>adjustment>B&W
> > complete with preset that you can load for yourself? As for just
using the
> > red channel? I don't think so. It just does sound right at all. 
> > 
> > 
> > 
> > Just did a screen capture of a red channel only B&W, and a convert to
> > grayscale screen capture and the numbers don't match. Close but not a
> match.
> > 
> > 
> > There are default setting lurking in PS and I think that you idea
about
> what
> > is being done there is just that. I'd ask some Adobe folks about it. 
> > 
> > 
> > 
> > As for scanning, you can use the channels for sharpening, noise
control,
> etc
> > in the scanner software. It is a whole new exposure of a scene.
How would
> > you like to render it? That is the first question and the beauty
of it is
> > there is no ONE answer, but many equally valid choices.
> > 
> 
> 
> 
> .
> 
> Image removed by sender.
>  
> 
> 
> 
> [Non-text portions of this message have been removed]
>