Date sent: Sat, 27 Nov 1999 18:36:28 +0100 From: Eckhard Stephan To: infrared@a1.nl Subject: MACO IR 820 fogging problems Send reply to: infrared@a1.nl Just a warning to the other MACO pioneers on this list: Please be VERY, VERY CAREFUL with the film - even more careful than with HIE !!!! I just developed a roll of the MACO 135-36 prototype and had to realize that the first 12-14 frames are heavily fogged - something that didn't occur to me with HIE for a long, long time... At the moment I got no idea, where the hell the fog comes from - but I will try to find out and let you know. Right now I could only repeat my warning: Be careful - and only open the tin can, in which the films are delivered, in total darkness ! Cheers, Eckhard P.S.: I'll tell you more about exposure + developing as soon as I know for sure what to do with the film. Date sent: Sun, 28 Nov 1999 21:39:48 +0100 From: Eckhard Stephan To: infrared@a1.nl Subject: Re: MACO IR 820 fogging problems Send reply to: infrared@a1.nl Hello everyone, I found out the reason why my MACO IR 820 was fogged: The plastic container of the film as well as the tin cassette itself are NOT IR-PROOF. I fogged the film while I let the firmly closed container stand outside the fridge for about half an hour to acquire room temperature. Fortunately it was only one roll... This evening I performed a simple test: I cut off two little pieces of film from a fresh roll of Kodak HIE in my darkroom. I put the first one in a HIE plastic container, which I know to be IR-proof, and the second one in the MACO container. Then I turned on the lights for some minutes. After that I developed the two film pieces as usual. The film from the Kodak container was fine, whereas the one from the MACO container was completely black. This means that YOU MUST NOT OPEN THE TIN CAN OF MACO 135-36 EXCEPT IN ABSOLUTE DARKNESS. Hopefully this warning doesn't come too late... Cheers, Eckhard