While preparing to review Profiler
4.0, the latest release from MonacoSystems Inc., foremost in my mind was the
concept of true color.
True color is the dream of the imaging
professional. Its a simple idea: What you see laying on the scanner table, is
what you see on the screen, is what you see coming off the printer or press.
True color requires end-to-end purity, so that no
tweaking has to be done repeatedly in the composition or editing application to
obtain some semblance of the original when a print is finally made. With
sophisticated and interconnected electronic components that are highly variable,
this means that some form of compensation is needed. Sometimes this happens at
multiple points in the device chain. The compensation provides an artificial
form of matching. This means that a known analyzed defect is matched
exactly by an electronic correction factor.

Since 1993, Monaco Systems has been creating software to help with this process.
In the early days, they focused on color-correction solutions. Shortly after
Monaco was formed, eight industry vendors came together to establish the
International Color Consortium. The purpose of the ICC was to create, promote
and encourage the standardization and evolution of an open, vendor-neutral,
cross-platform color management system architecture and components.
MonacoProfiler 4.0 enables the user to build
these ICC-compliant profiles for input devices (scanners and digital cameras),
monitors (including liquid crystal display types), and output devices (printers
and raster image processors).
Profiler comes in as the high-end solution in the
Monaco product line, having been designed for graphic arts professionals who are
typically operating at a level of critical, large-scale production.
To this end, its optimized for support of
professional-grade measuring tools. For monitor measurement, this means tools
like X-Rites DTP92 or a GretagMacbeth Eye-One. A typical example of a
supported spectrophotometer would be the X-Rite DTP41 AutoScan, a sample of
which Monaco was kind enough to send along for this review.
Since I had the spectrophotometer, this allowed
the creation of a printer profile. The first step was to connect the DTP41 to
the USB port on my Apple iMac running OS 9.1 and ColorSync 3.0.3. The tool comes
with a serial port interface, but also ships with a serial to USB adapter and is
suitable for either Macs or PCs. My iMac recognized the device immediately.
The
next step was the installation of Profiler 4.0. This was again a smooth process
that required the installation of a hardware dongle, which plugged neatly into
the unused USB connection on my keyboards left-hand side. With a pricey
software package such as this, the need for the hassle of a dongle is perhaps
understandable.
One thing the price buys you is an excellent
owners manual. Very well written and organized, it has many illustrations and
is a compact size that lets it sit on your desk for easy reference while you
work. Its geared towards the person who has never done an ICC color profile,
and yet contains great amounts of more advanced information the deeper one gets
into the chapters. The software is geared that way, too. Often it presents
defaults and pre-selects options for the user, but theres always a more
advanced choice that opens a plethora of menu options, allowing for extensive
customization.
I wanted to generate a profile for an
office-connected Tektronix Phaser 740, a four-year old CMYK printer that prints
16-40-lb. bond to 90-lb. card stock (60 to 163 g/m2), plain paper, glossy paper,
and transparencies. I thought an older printer might prove to be a good
challenge for the software, requiring greater correction, and its also one I
had handy.
Profiler 4.0 walked me through the initial steps
of selecting profile data for the printer, which requires you to know quite a
bit about how your printer works, such as whether its using an RGB, CYMK or
Pantone Hexachrome profile. PostScript devices use CMYK profiles. Most desktop
printers use RGB profiles even though the actual colorants are CMYK.
The next step let me select the type of
spectrophotometer I was using. Checking with Monacos Web site before purchase
will ensure the purchase of a compatible model. Monaco also sells complete
packages of its software and measurement tools. I chose not to select the
linearization option, which means that you measure a set of color patches to
determine the linear response of the printer throughout its operating range.
Usually, the print driver performs this function, and it is not possible to
perform if the device drivers color space isnt the same as the printing
technology. For example, its not possible to linearize a CMYK printer thats
using an RGB driver.
Now, I was ready to print the actual test strips.
You choose the paper size, resolution, color-correction, etc. Monaco suggests
keeping a log of the resolution, media type and other settings used when
outputting targets to create profiles. Its important to understand that a
profile is only applicable using a given set of circumstances and materials,
such as paper type. Switching paper stock or resolution will typically require a
new profile, as an important variable has been changed in the equation of
correct color. No one ever said correct color was painless.
Printing of the strips can be done directly from
Profiler, or you can save them as DCS or TIFF files and print them from another
application. I printed them directly from the application, fitting two complete
sets per page, which were then cut apart with a paper cutter.
The console display then tells the user which
strips to feed into the measuring device, identifying them by sheet number and
row number. At first, I was thrown for a loop because after the last screen, the
application doesnt really prompt you to start the measurement process, and
the next box is grayed out. I finally figured out that the program was
waiting for input, and when I hit the correct button on the X-rite and began
feeding the sheets, then data began to populate the correct boxes.
The number of rows printed will vary, depending
on what you selected in the previous screen. In my case, I had eight sets with
five strips per set, meaning forty trips through the spectrophotometer. I also
learned its critical to pay attention to this process; I was attempting to do
this task while at the same time answering some emails. I ended up turning some
of the strips around and feeding them into the device the wrong way, which
necessitated starting the entire process over halfway through, so my attempt at
saving time backfired. Giving the task proper attention, I finished it in about
fifteen minutes.
From there, an actual color profile is generated
and exported. A number of options are available immediately prior to exporting,
such as black-level generation settings. Black-level generation selectively
replaces the usual combination of CMY with pure black ink. This has the effect
of creating more pleasing, contrasted blacks as well as saving use of the the
color ink cartridges on desktop printers. The table options allow you to
choose a default rendering intent, which creates a lookup table, describing how
your profile compresses color to fit inside the printable gamut of the output
device. In simple language, this allows Profiler to fit the range of color
inside what your output device can handle. The resolution of this table
describes the resultant interpolation in greater detail, and increasing it can
generate smoother results but is more demanding on the printer or raster image
processor in terms of memory and processor usage.
From this screen you can also access the advanced
settings tab, which allows adjustment of a wide range of output
characteristics for extremely fine-grained tuning of contrast and saturation.
Monaco suggests first creating a profile without going deeply into these
options, print some test images using your new profile, then rebuild the profile
and apply the features only as necessary to enhance color. Its entirely
possible to rebuild the profile without taking all new patch readings, to save
considerable time. For further control, you have an entire Editor option, giving
you tools for adjusting output curves, editing CIELab color attributes,
customizing gamut compression to affect color selectively, and fine tuning
colors and neutrals in the color space of the given profile. Profile edits can
be previewed, using either a visual image as a soft-proof (most useful, of
course, after your monitor has been calibrated) or by reprinting and checking
the image until the desired result is obtained.
Although I didnt get into the more advanced
editing operations, I found the basics extremely easy to use, and I generated my
first profile and tweaked it quite successfully in one afternoon. Someone with
more experience with color profiles would no doubt be able to beat my time by a
wide margin, but the manual taught me a lot in the process.
For those wishing to do color profiling without
some of the advanced features of Profiler, Monaco has a new product slotting in
at more of a prosumer level. Monaco EZColor features a wizard-type
interface, and does not sport the advanced editing features of Profiler.
Being scanner-based, no spectrophotometer is
required. Ideal users for Ezcolor would be professional photographers and
graphic artists. For a middle tier of pricing, Monaco has MonacoProof, which
supports higher-quality profiles than EZColor, support for LCD devices, and
support for the GretagMacbeth Eye-One spectrophotometer.