Thank you shAf!
I especially appreciate his articles A Profiling Primer at
and Color-Accurate
Inkjets Made EZ (review of 3 profiling software programs) at
Maris
----- Original Message -----
From: "shAf" <michael@shaffer.net>
To: <filmscanners@halftone.co.uk>
Sent: Saturday, February 03, 2001 11:56 AM
Subject: Re: filmscanners: This Gamma thing version 2.0
| Tom writes ...
|
| > Here I am. Spending hours trying to get the gamma just right so that
| all my
| > pictures will look great on any platform. And then I hit the print
| > button... Then what??
| >
| >
| > In short: How does the gamma setting affect the output when the
| image is
| > printed out on paper? Should I have two different files: One with
| gamma=1
| > for printing, and one with gamma=2.2 for web publishing?
|
| Possibly (... I know, not much of an answer ...). Understand this
| is a bit dependent on your printer manufacturer. Did they write the
| driver software for your printer which anticipated a specific gamma.
| A consumer type printer like a HP 895 will assume a color space
| similar to sRGB (gamma=2.2) is what needs to be printed. However, if
| you prefer to use a 3rd party postscript driver for the same printer,
| you may indeed have to fine tune a gamma variable.
| Usually, you will always be in the ball park with a gamma ~2 ...
| as if luminous response for all devices is a function of "area" (an
| exponent of '2') ... even our eyes' perception has a similar gamma.
| Yet, '2' is never exact, and there is definitely a difference between
| 1.8 and 2.2.
|
| If you are really curious about all this (... and more ...), then
| you'll want to explore color spaces and device profiles, why many of
| feel they are necessary, why they are sometimes a headache, how they
| are supposed to work together ... scanner=>photoshop(and
| monitor)=>printer. Bruce Fraser is almost everyone's guru on color
| ("Real World Photoshop" & "Real World Scanning & Halftones"). He has
| some online articles here, but his book is most enlightening.
|
|
|
| shAf :o)
|
