Magpie said:
Is it the size that makes the Compur #3 unpopular? If you got that lens on ebay I think I saw it.
Am I right in assuming that most lenses, if in good condition, and with sufficient coverage for the size format etc will perform satisfactorily? Not stellar performance from the older lenses but acceptable for B&W contact prints? :confused:
No - acually the Compur
#2 is the one that's "unpopular due to size".
There is no Compur #3, and never was. There is Compound #3 instead, which looks a little like a very old Compur. But the Compounds were in production well into the 1970's, and are very reliable shutters. But
look very old.
Another one with a size problem is the Compound #5: 125.5mm diameter (almost 5") is too big for most lensboards, and the lenses that need these huge shutters tend to weigh anything from one to 3 kilos.
Yes, I got the lens off ebay - Germany.
For the nest question, you are absolutely right: Most lenses made in the last century are satisfactory, many are exellent. The poorest ones are the very very cheap ones (original price), and the very very expensive ones (ditto, but also "collector's price"): A 10-element 2-group double anastigmat was expensive, is expensive, and is
theoretically a wonderfully sharp lens. Pity it's never been possible to produce perfect samples - in 99% of the samples, a cheap Aplanat would be sharper...