of the more frequent complaints and problems from photographers is that they
are not getting expected color reproduction from their printers. More times
than not the solution to this problem involves what is referred to as color
management. So, to launch into this review of a device and software for calibrating
and profiling printers, I will begin with a short, and I hope easily understood,
description of what color management is, what it does, and how it works.
There is a need for color management because color reproduction devices like
scanners, monitors/displays, and printers produce "device-independent"
color. This means that a monitor or printer will reproduce different measurable
colors for a particular set of RGB number values compared to another device.
This is color anarchy.
Every printer made will reproduce a slightly different color of orange from
the values R-218 G-112 B-25 than any other. To overcome this unpredictable chaos
of independent variation, some years ago a group of key companies involved in
color reproduction created the ICC (International Color Consortium) and agreed
on a set of standard colors as the basis for a system of color management. The
management is achieved by measuring the actual reproduction of a color device
against the standard color, like a display or printer (calibration), and creating
a file (profile) that describes how the device varies from the standard ICC
ColorVision has made precise, instrument-measured professional printer
profiling available in their PrintFIX PRO at half to a third the
cost of what it had been in the past. Now every serious digital
printer can afford to custom profile their print output with the
precision of a high-end professional print service.
Once each device like a monitor and printer is calibrated (measured) and there
is a profile file placed in the operating system of the computer running the
device, then the device can reproduce colors that are true to the ICC standard
colors. This is accomplished by a virtual device (like a translator) that's
part of the operating system called a CME or CMM (a Color Management Engine
or Machine). The CME receives RGB data from an application's open image
file with sets of numbers for each pixel's color. The color data is then
corrected relative to the profile information of that device so that colors
are reproduced according to the ICC standard color palette.
So, if your monitor/display is accurately calibrated and profiled, then when
you edit a photograph in Photoshop the number values for each pixel should be
recorded in a saved file that is true to what you see on screen. That is the
source information needed to make a color managed print, one that matches the
monitor display of the image to the printer.
This is where ColorVision's new PrintFIX PRO comes into play. It provides
a precisely accurate measurement of printer color performance to produce a highly
detailed and accurate profile.
A key part of using PrintFIX PRO is printing a target file of color
patches on a 8.5x11 sheet of the sample paper to be profiled. You
then read each color patch with ColorVision's new spectrocolorimeter.
It is a guided process that can be accomplished in a few minutes.
ColorVision's PrintFIX PRO Hardware And Software
Before getting into what is involved in the hardware and software that is in
the PrintFIX PRO package, you may want to know the advantages of a precisely
accurate, professional way to calibrate and profile your printer. It is true
that with any modern photo printer when you install the driver software, profile
files are added for the printer to your operating system for use by the printer.
But they are limited to just the papers and inks sold by the printer maker.
In addition, these "canned" profiles may not match your printer
very precisely. A consumer photo printer is a mass-produced product and each
unit may involve some production variations. A profile for all printers and
a particular paper has to target the center of those manufacturing variables.
You or I cannot tell if the printer or paper we have is a bit off one way or
another and whether we are obtaining ideal performance, or just a percentage
of what is possible.
Precision custom printer profiling makes it possible to obtain the best possible
print performance potential your printer and paper is capable of, as well as
make it possible to use third-party papers (or inks) to get equally high print
image quality. In other words, if you spend a considerable amount on a photo
printer, as well as ink and paper, wouldn't you like to obtain the maximum
image print quality possible from your investment?
The ColorVision PrintFIX PRO hardware and software is simple and easy to use.
Under the surface what makes it work is very sophisticated and complex, as I
learned from several months of participating as a beta tester for this new product.
The hardware is a spectrocolorimeter whose function it is to read patches of
color on paper produced by a printer, sometimes referred to as a "patch
reader." It is marginally larger than a computer mouse, being somewhat
triangular with a very small reading orifice at the head of the triangle. Inside
there are colored LEDs and a sensor to precisely measure the light reflected
from the printed color to determine the precise color value.
The PrintFIX PRO software is an application that is entirely wizard-driven by
screens with text instructions and menu access for the printer driver. Information
input for each step of the calibration and profiling process is performed by
going from one screen to the next until a profile file is created and installed
in your operating system. In addition to the wizard-driven process you can use
the spectrocolorimeter to read color samples and obtain numerical measurement
values. You can also use PrintFIX PRO as a computer-driven digital densitometer
to linearize black and white print output.
The ColorVision PrintFIX PRO wizard-driven software is both easy
and efficient to use.
Profiling Your Printer
After easy software installation, launch the application and plug in the spectrocolorimeter
via its USB cable. The first screen is just some simple text instructions that
direct you to open your printer Page Setup window and designate the page orientation
to landscape. Beginning with this first wizard screen, reading the directions
fully and carefully following instructions is all you really need to do to make
the product work effectively. But as we all know, photographers exercise a kind
of bravado by using a product without ever cracking the user's manual.
Sadly, many have been inadvertently encouraged in this by manuals that are largely
unreadable, and, in the case of cameras, by promises that great pictures will
result if only the user can find the On switch and the shutter release.