Acer & others.
Calibrating a monitor to scanners has become rather difficult since
Adobe introduced the Adobe Gamma tool. I assume you are using Photoshop
ver. 5.0 or 5.01 or other Adobe product which has installed the the
Gamma tool.
There are two things to keep in mind. One is that when scanning most
software will assume that you plan on outputing to some form of prited
document. Prior to the many array of ink jet and other color output
devices most scanning software just defaulted to either a 1.8 or 2.2 RGB
screen gamma. Normally a 2.2 was good if you were outputting to a
things such as a film recorder and 1.8 was for general ink print
documents. Ofcourse this did not take into consideration of too many
sophisticated output devices. Things have changed. Now because of the
Internet, Adobe and others have decided that the all images should look
the same on all RGB monitors if they are calibrated to a particular
standard. Also monitor manufacturers are including calibrating software
for this task. I would hope that later versions of scanner software
recognize that the settings on their panels have to correlate or default
to some kind of general standard depending on what the scan will be used
for. No longer will the old 1.8 or 2.2 gamma solve the problem as we
try to calibrate everthing to a moving standard based upon new and
improved monitors and their software profiles.
In short try to get the latest version of the profile for the monitor.
And try to make sure the scanner has a choice to scan to that screen
gamma if the intented output is to a RGB or Internet screen.
In the meantime don't worry about the matching the bars. Just use your
eyes. Upload the images and download them on to some other quality
monitors. If it looks ok then you've solved the problem the old
fashioned way. My guess is that the bars (especially in the Adobe
product) are only for calibrating when you have no monitor profile
installed. If you have the Sony profile properly installed don't mess
with the bars.
Phillip Franklin
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