</span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (chrisl @ Apr 11 2003, 03:07 PM)</td></tr><tr><td id='QUOTE'>And Tschmid, dichroic filters do go bad... I think after awhile, they loose the consistent filtration/colors.</td></tr></table><span class='postcolor'>

Dichroic filters may get dirty and may wear due to thermal stress (get broken, burned in dust, etc). But they do not fade like a dye-based filter.