Dear Darkroomlover, I would like to use my Durst M605 color head (max. magenta setting is 130) for variable contrast BW paper. What settings of Yellow and Magenta correspond approximately to the Multigrade under-lens contrast filters? I have found the following table: http://www.rhdesigns.co.uk/darkroom/html/junk1.html#top Does anybody know if these figures are accurate? And does one have to change the exposure time when changing contrast settings according to this table (or any other)? Mike.