An important part of viewing images on the web is how well you monitor reflects the color, tones, and quality of the image. On a poorly adjusted monitor even the best images will look bad.
On the test pattern below you should see 20 evenly spaced boxes with shades of White to Black. In the lower box you should see a smooth gradient from White to Black.
If you are unable to see the 20 boxes clearly, or if the gradient has steps/breaks in it then you will not be able to fully enjoy the images on this site, without adjusting your monitor or viewing it on a different monitor.