I have purchased a shutter speed tester recently as I am trying to make a shutter similar to the one shown in this post:
I have noticed on testing one particular shutter, a Copal 1 SNo. 1561xx, that the top speeds are very slow, 1/400th sec is actually 1/200th sec and 1/200 is 1/172, the rest of the slower shutter speeds are within 5% of the indicated speed. I realise that mechanical shutters will vary and not be too accurate, but I always though that the faster speeds on mechanical shutters were more accurate than the slower. The fastest speed I have used so far on this shutter is around 1/125th second.
Should I worry and have an expensive CLA or just leave things as they are?
Thanks in advance for your input.