Mike, The difference that I have seen is that the filters for multigrade papers do not behave as expected with multigrade papers. Moveing from one filter grade to he next coudl have a much greater or lesser effect than anticipated. IIRC the exposure times were significantly longer with the C41 films. The old XP2 did not have the orange mask. It had a clear base and it was wonderful stuff. Seems in making it "better" they made it more like the Kodak... I am just wondering if the light wavelength of the cold light head has a greater or lesser effect on contrast and filtration with the orange based C41 B&W films. Speedy Date: Fri, 27 May 2011 06:05:25 -0700 From: fourbyfiveguy@xxxxxxxxx Subject: [pure-silver] Re: C41 B&W films To: pure-silver@xxxxxxxxxxxxx Could you elaborate a bit on your increased difficulty with printing these films? I haven't used XP2 in years myself but several students in my darkroom classes have insisted on using both Ilford and Kodak. The only difference I've seen is that the C41 films tend to require a higher contrast filter than silver films. Mike Healy From: Speedy <speedgraphic@xxxxxxxxxxx> To: pure-silver@xxxxxxxxxxxxx Sent: Thursday, May 26, 2011 8:15 AM Subject: [pure-silver] C41 B&W and Cold Light Head??? (2nd try) I was swapping emails with a friend about the C41 processed B&W films today. Aparently Fuji has a Neopan CN film that is not sold in the US but according to him is really superb. We got to discussing the other C41 B&W film offerings. One of the observations that made was that I had absolutely LOVED the old Ilford XP2 but did not care for the new "improved" version. The old XP2 had a clear base where the newer stuff has the color mask. This orange mask makes printing on regular black and white paper more difficult than printing a regular negative. I have always DESPISED the Kodak C41 film... As I was typing this a question occurred to me that I am betting that some of you can shed a little light on. I have always printed with either a condenser with incandescent light source head, or a diffusion/halogen color head... What would be the effect of using a cold light head on printing these orange C41 negatives. Would this be the same as otherwise or would the orange mask have the exact same effect with this lightsource. I recently acquired a Zone VI cold light for my enlarger but have yet to try it out... Thanks in advance!!! Speedy