RE: [Leica] Piezo printing

["Austin Franklin" <darkroom@ix.netcom.com>]

> Austin Franklin, in a throughly contentious style, wrote
> after I said:

Henry, you're being VERY unfair, and WAY to sensitive.  I've only asked you
questions about things you've said, as well as given my opinions and shared
my experiences.  That is hardly contentions, Henry.

> >> Some use the green channel only,
> >
> >Who that you know of (for sure)?
> The Leaf Lumina - it took only the info from the green filtered section
> of the trilinear CCD to the AD converter.

Interesting.  It's got a lot of the same hardware and software as the
Leaf45.  I actually have the code for it...but I haven't really looked at
how it does this.

> Anyway, Austin, I further stated that it was faster also because there
> was less data to move around.

Once in the computer, that's certainly true in PS manipulation,
reading/writing files to/from disk etc...but in my experience (and note,
Henry, I'm just stating MY experience having designed and worked with this
stuff for over 20 years now) the data transfer rate from the scanner to the
computer is not the bottleneck...it's the actual scan time.  If you mean
from that the scan time is faster because it's grayscale, with a single pass
scanner, I believe the scan speed should be the same, whether it's B&W or
RGB.  With a three pass scanner, of course grayscale is faster...

> And then when I stated:
> > But with some lame scanners scanning RGB then converting back to
> > grayscale can help with stubborn negs.
> Austin wrote:
> >>But they ALL scan in RGB (except the Leaf as far as I know)
> then convert to
> >>grayscale in the scanner.  Are you suggesting that because you
> can do the
> >>conversion better in PS that what is done in the scanner?  What would be
> >>"stubborn" in a negative that would "necessitate" that?
>
> Austin, this is from my experience using lots of different scanners over
> lots of years.

Henry, please read what I wrote.  I asked two questions, one asking to
clarify what you were talking about, and two asking what YOU considered a
"stubborn" negative.  Please, I didn't challenge you at all.

> I suggest you try it yourself before you poo-poo it.

Like I said, you're being way too sensitive here.  I haven't poo-poo'd
anything at all!  I'm trying to understand exactly what it is you are
talking about.

> As to using PS to do a grayscale conversion after scanning a B&W neg as
> rgb, it does not make for a better conversion. There is no color info to
> "mix" for better results.

You can't vary the "mix" in PS?  I didn't know that, I've never tried, and
I'm not a real PS user...I do all my work in the scanner driver.  The
WinLeaf software does have histogram, tonal curves, setpoints etc...so I
find I really only use PS for printing.

> Before you rip into my posts why not suggest YOUR better method of work
> and tell why its better?

I never "ripped" into your posts at all (specifically on this subject...I
went back and read all of my responses and really have no idea why you feel
that way), nor did I ever say anything I did was better or worse than yours.
I've stated my opinion, experiences and asked you questions!  Please go back
and read what I wrote.  Because of what you wrote, I am interested in YOUR
opinions and experiences, hence my questions.  I also HAVE stated some of my
method, in my very first response to this thread...  What's up, Henry?

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