This page is courtesy of and Copyright ©2012 Boston advertising photographer
Stanley Rowin Photography, a location and studio advertising, corporate, editorial, and stock photographer.
This page has been here since 1994. Please do not reproduce without permission

Please make your screen wide enough to see both arrows on this line:

The point of this page is to tell you whether your internet provider, your software, and hardware are conspiring to take away from perfect viewing.

The image below should appear as a rainbow starting and ending with red. There should be a smooth transition from color to color with no banding and no little dots, or noise. The background for this page is gray.

monitor Calibration Test

The following images are not a smooth transitions. If you have only limited colors the above rainbow would look something like these:
monitor Calibration Adjustment

If that's the case, you probably need more video RAM, or a different video board.

That's color, now let's deal with tone, brightness and contrast.

Below are four boxes. One should be absolute black. Nothing on your monitor should be darker than the black box. If your monitor has a black border, it should be as black as the black box below. And nothing should be lighter than the white box.

<-you could adjust contrast and brightness to achieve this.

"Crossover" is when your monitor's Red, Green and Blue guns don't have linear curves. The chart below has boxes that go from black, to gray, to white. No colors should be visible: no pink, yellow or green cast at all!

Crossover test
If the boxes pick up a color cast, one of your monitor's guns is out of adjustment. Ideally you should see every distinct box. If you have an LCD screen, move your head far to the right and left, up and down to see if the boxes change color or density.

Gamma (or contrast) is next.

This next test doesn't work on most flat LCD monitors.
(With the proliferation of LCD monitors, we will try to develop a test for them.)

Step back from your monitor.
One of these numbered boxes is about the same shade as the surrounding.
Rowin's Gamma Test
That's your "screen gamma." Many photographer's web pages are designed for 1.8 Gamma. Windows OS computers and TV monitors are calibrated for 2.2 Gamma.

Inexpensive resources to adjust your monitor's calibration are:
Monitor Calibration Wizard for Windows
SuperCal™ for Mac OS
Apple's Display Calibrator Assistant in System Preferences
Adobe Photoshop's Gamma Control Panel

How did you do? Contact me if you want help "tweaking" your screen. E-mail us at or call us at (781) 259-0064

Now, please return to our home page:
Boston editorial and advertising photographer Stanley Rowin:
or our product photography site or our Boston Stock Photography web site.

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