I try to be dogmatic about very little - I haven't the experience for a start : but I am certain you are right about your bulb. I started off with a 100W as I started in B&W but exchanged it for 75W when switching to colour as some of the prints from the negs would have been overexposed at the min exposure that my Paterson colour analyser dial could be set for( about 4 secs).
Originally Posted by Roger2000
It is true however that colour negs did look much darker than the B&W negs I was familiar with but certainly not anything like so dark as to prevent the use of a focus finder.
If the dichroic filters are stuck then a simple test is dialling in each filter and observing the changes. Try 0 -130 on each in turn then all three at units of 10 or 20 each time. If all three are dialled in with the same amount each time then you get an ever darkening neutral grey.