To see photographs accurately on the web you need a calibrated monitor. Browsers like Firefox and Safari can red the .icm profiles attached to images and ensure accurate representation of colours and tones. If you want to take advantage of this, you really need a device for calibrating your monitor and this is beyond the intention of this page. However, without this step you can do things to make your monitor display images better.
Set the contrast on your monitor to 100% and then adjust the brightness so you can only just, and I mean only just, differentiate between the black and very dark grey tones. This is as good as you can get it without a calibration device.
