Are the large focal plane shutters accurate ?
I checked mine out. 1/1000 sec is dead on. Your average modern SLR it is probably no more accurate.Kalart Side Mounted Range Finder [Up to 1955]Side mounted Kalart rangefinders without interchangeable cams, can be adjusted for a particular lens, if the proper (tedious) procedure is followed.Operation: The two images in the Kalart are the same color. The split portion shows up as a center spot. This may become more apparent if you place a colored piece of gel in front of one of the openings to the Kalart. [If the half silver mirror is abraised or otherwise lost silvering, this image may be very faint.] In general bring the split image into alignment, and if the camera is in focus through-out the scale, then the rangefinder is cammed or adjusted to the lens. Here are some instructions for adjusting the Kalart.
I checked mine out. 1/1000 sec is dead on. Your average modern SLR it is probably no more accurate. Kalart Side Mounted Range Finder [Up to 1955] Side mounted Kalart rangefinders without interchangeable cams, can be adjusted for a particular lens, if the proper (tedious) procedure is followed. Operation: The two images in the Kalart are the same color. The split portion shows up as a center spot. This may become more apparent if you place a colored piece of gel in front of one of the openings to the Kalart. [If the half silver mirror is abraised or otherwise lost silvering, this image may be very faint.] In general bring the split image into alignment, and if the camera is in focus through-out the scale, then the rangefinder is cammed or adjusted to the lens. Here are some instructions for adjusting the Kalart.