At our local arts collage we have a very well equipped darkroom with about
20 or so enlargers, mainly colour, mainly durst and LPL. They DO get an
awful lot of use, but someone was trying to print a low contrast B&W
negative using a colour head and despite dialling in the strongest
filtration, was only able to get a very low contrast print with no real
blacks. On examining the neg, we thought that it really should print OK so
we swapped to a B&W enlarger with Patterson filters and it printed fine at
grade 3.
General conclusion was that the filters had faded.
Steve
Wasn't that why dichroic filters made their appearance? To combat
the dreaded filter fade.
--
Winsor Crosby
Long Beach, California
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