Originally Posted by
LabRat
First, I assume you are referring to the later Syncro-Compur shutters, and not the earlier Compur's...
The Syncro-Compurs are well engineered shutters, built with tolerances inside almost like a watch...That said, the downside is that if they didn't have a full, careful CLA by a good tech, those tight tolerances can get rather sticky and bind easily, even just by lack of use... (Ask a Hassy owner who didn't use their shuttered lens for a couple of years about it...) Sometimes they don't like the cold, or adverse conditions... They need a really good CLA, careful operation, and some exercise at least every month or two to be happy (but sometimes fussy)...
Copals have less tight tolerances, but that allows them to continue working well even if not in perfect CLA'd condition, and are slightly newer and a little simpler inside, so a little more tech friendly...
Old Compurs can work OK if serviced, but the iris usually has a lot of slop between the blades, paper, and VERY hard to reinstall!!! Don't get them wet or oily!!! But they usually don't have minimal modern features like sync, press focus opening, have to be un-cocked to operate B & T, etc... (Use 'em if you got 'em, but from another time...)
But they all work, but hard to say what's best...
Steve K
Bookmarks