In article ,
rafe b rafebATspeakeasy.net wrote:

On Tue, 10 Jan 2006 08:03:05 -0500, G- Blank
wrote:

In article ,
rafe b rafebATspeakeasy.net wrote:

On Sat, 07 Jan 2006 02:10:24 GMT, "Scott W"
wrote:

It would also be interesting if one of the people who claims that optical
prints will have more detail then form scanning could do the same thing
you
have, make an optical print and then scan the print.

So "BOTH" prints are scanned from the relative output?

What is "relative output"?

From an enlarger it = Optical prints
From a Digital file it= An Inkjet or a Lightjet/Lambda.


Really, the only thing "novel" about my post was that I
presented scans of prints, rather than (or in addition to)
a raw film scan. All the images (but one) are scans of
prints; either that smalll Letter-sized print from the Epson
R1800, or a 24x30" print from an Epson 7000.

No takers. I could have guessed.

First maybe it was missed (Like in my case) When
reading the LF group I tend to look for people asking questions
about how to do such and such versus people looking to prove a point.


We talked a few months ago about a "print exchange,"
but it never happened. I figured this was another way
to go about it, albeit on a very small scale.

All it involves is getting the print onto a scanner, which
can be a bit of a challenge, if it's a big print.

However: in both analog and digital, one can *enlarge*
as if making a big print, and yet print a small area of
that enlargement. I suspect that's what John C. will be
doing with my negative when he gets it.


rafe b
www.terrapinphoto.com

There are several issues I have with the two processes
being compared.

The scanning process always represents limiting the originals
tonal values if one is scanning a negative to the definition of the
scanner and its software . Therefore subsequent scans from the outputted
print should be within the scanners ability to "Re-represent"the values
obtained from the initial scan.

The optical print may however hold more initial values than the scanner
to paper can represent. Therefore to get an appealing scan from the
Optical print one is required to clip these tones within an editing
program. And since within photographic sensitometry its been shown that
the perception of sharpness is related to tonal representation- Well it
just makes me question the looking at and deciding based on computer
files posted on the web. Its still a worthy experiment.








--
"To announce that there must be no criticism of the President,
or that we are to stand by the President, right or wrong,
is not only unpatriotic and servile, but is morally treasonable
to the American public."--Theodore Roosevelt, May 7, 1918

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