If it is on your monitor only, then it is probably a brightness correction (or maybe a gamma correction). Brightness is usually set from knobs or buttons on the front of the monitor. Gamma is a little more tricky and depends on monitor/video card.
If this is happening only on print-outs, then it is a printer problem - driver maybe, or maybe an "ink-saver" mode, or you may have a printer that cannot produce a true black - or has the black ink supply exhausted. Tim Glover Senior Environmental Scientist - Geochemistry Geoenvironmental Department MACTEC Engineering and Consulting, Inc. Kennesaw, Georgia, USA Office 770-421-3310 Fax 770-421-3486 Email [EMAIL PROTECTED] Web www.mactec.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of ChristophBert Sent: Thursday, January 27, 2005 6:56 AM To: opendx2-users@lists.berlios.de Subject: [opendx-users] Black color problem Hello, I use OpenDX to visualize CT data in greyscale. My problem is, that black color in the colormap editor does not show up black but (light) grey in the image, e.g. the black-to-white distribution is reduced to gray-to-white. Any idea what causes this behaviour? Thanks! Christoph