Welcome to Sharky's online gamma calibration wizard. This wizard consists of two easy steps:

  1. configuring your monitor's brightness and contrast controls
  2. configuring your display adapter's gamma correction registers

Before continuing, please maximize your browser window so that this page's gray background will occupy as much of your screen as possible.

Click here to continue.

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The first step in calibrating your system is to adjust your monitor's brightness and contrast controls.

First, set the contrast control to its highest setting.

Then, adjust the brightness control to make the center box as dark as possible (but not black) while keeping the frame a bright white.

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The gamma setting of your monitor defines how bright your midtones are. If you have a modern display card, it probably supports onboard hardware gamma correction. This is the best form of gamma correction because it usually does not result in loss of resolution. (Some programs also support software-based gamma correction, but these solutions degrade resolution and gobble CPU resources.)

Use the control panel applet for your card (usually installed with the driver) or any other appropriate means to adjust your card's gamma setting. Play with it until the center box fades into the patterned lines.

(Any information on how to adjust hardware gamma registers in Linux X servers would be helpful.)

Click here to continue.

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That's it. You're done.

Your monitor and display adaptor have been configured to display intensities correctly. Don't forget to verify your calibration from time to time, especially before making graphics for the web!

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