Hi,

I have a Durst 138 with the cls301 colorhead, the enlarger are from the mid 70's.

Today I printed some samples at various grades to use for testing a diy LED head on a Focomat 2c, work in progress.

Looking at my test prints there are very little difference between the grade 3 and grade 5 print from the durst. Had expected a wee more.

Thus the question, do a color head deteriorate with age? Or go out of calibration? (Two lamp head)

Best regards
Morten