Well, in editing my first post and attempting to get rid of the incorrect photo the link to the simple shutter speed tester got deleted so here it is:
read through the entire post first as the latter posts are the most up to date.
When checking a shutter by eye position the shutter so that you can see the shutter blades and the second hand of a watch or clock. A clock with a sweep hand is best.
Set the shutter to the 1 second setting, set the shutter, trip just as the second hand is in line with a second mark. The shutter should open and close just as the second hand gets to the next second mark.
Set the shutter to the 1/2 second setting and repeat. The shutter should open and close just as the second hand reaches the mid point before the next second mark.
Set the shutter to the next higher speeds in sequence and verify that the speed increases until you get to the 1/50~1/60 then set to the next slowest speed and verify it is longer than the previous.
Normally if the 1 and 1/2 second speeds are correct the rest will be reasonably correct up to 1/100 second. Speeds faster than 1/100 use a booster spring and the condition of that spring and wear on the shutter determine if the fast speeds are good.
Last edited by shutterfinger; 08-07-2013 at 03:42 PM. Click to view previous post history.