Depending upon your computer type choose either the "Windows
Default" or "Mac Default" gamma. In reality, this choice is
not as important as it once was and you can choose either in the
knowledge that Photoshop will make the appropriate corrections when
necessary. Personally, and even though most of my work is now done on the
Mac platform I choose gamma 2.2
Choosing the "White Point" for your monitor is pretty much a
formality these days. Even the die-hards are in agreement that 6500oK
is probably the best option on most systems.
You should have already set the Hardware white point via the
dials/buttons on the monitor. Most monitors have a native white of
9300oK; so do check what it has been manually set to.
Choosing 6500oK provides the cleanest and brightest
white point and closely matches daylight. If you feel really confident
you could select the "Measure" option. You can choose 5000oK,
but this usually produces a slightly dimmer and more yellow white point.
Generally, it's better to leave the Adjusted White Point
setting at the default - "Same as Hardware". Nevertheless, this
option is used to choose a working white point for monitor if it
differs from the hardware white point set in the last step.
By way of example; if your hardware white point can only be set to
6500oK, but you want to set it at 5000oK
because that most closely represents the environment in which it will
normally be viewed, you can set your Adjusted White Point to
5000oK, and Adobe Gamma will change the monitor display
accordingly: However, choosing this approach will all cause the graphics
card colour LUT to be adjusted quite severely, and depending upon the
graphics card the screen can look quite ugly on some systems. As
indicated above I recommend that you choose "Same as Hardware" and
thus avoid this problem.
That's it, if all has gone well you will have adjusted the brightness,
contrast and colour settings of your monitor to the optimum values.
Make a quick check using the "Before" and "After" radio
button. If you're happy that the screen display now looks more neutral
than before press the "Finish" button and "Save" the
profile. Once saved the profile will be available for use by the OS and
There are a number of third party alternatives to Adobe Gamma, which
can be purchased from companies such as Color Vision and Xrite
The advantage of Adobe Gamma (Windows systems) and Monitor
Calibrator (Mac systems) is that they're free, whereas the third
party products can cost nearly as much as Photoshop. However, since many
third party alternatives use "hardware" and not the "eyeball"
for measurement we are assured of greater accuracy.