True Color Test
Test of Display capabilities
The image below is a 24-bit true color image. On PCs with displays
running in true-color there will be no visible banding as you move from left to right
across the image. If you have no banding then your display is optimal and you should
close this page.
The above image was converted to a 16-bit 65,000 color image. If you can see the
same banding in both the image above and the image below then your display is not
optimal and is not running in true-color. It may be possible to change your PC settings
to run in true-color if you want to see if you can click here.
To access the display setup dialogue box, minimize all applications and right mouse
click on the Windows Desktop then select Properties from the popup menu.
A dialogue box will open from which you select the Settings tab. You will find
the current color setting towards the left hand bottom.
The available graphics modes are dependent on the amount of graphics memory the PC
is fitted with. Increasing resolution requires more graphics memory just as increasing
the number of colors does. In fact it is the product of resolution and colors that
determines the total amount of graphics memory used. On systems with inadequate
graphics memory you will find that increasing colors requires windows to decrease the
To see if you can increase the number of colors:
- Take note of the current resolution
- Use the dropdown box to select a greater number of colors (24-bit true color if
Did the resolution change? If not go to step 4. If the resolution changed then
you should use the resolution slider to reset the original resolution and then
Cancel the dialog box. Your options are:
- live with it
- upgrade your graphics card (probably easier and cheaper than trying to
upgrade your graphics memory)
- use software that can automatically switch between true-color and
another mode for slide shows
- You can now Apply the change or say OK to set the new
mode. Depending on your system, windows may test the change or require a