I performed some measurements in November 1996, and here are the results. Now the operation of the shutter can be observed by looking at it. The camera was mounted on a tripod and pointed at a brightly lit corner of the room. Time was measured with a handheld stop- watch.
All results below are averages from three measurements.
Since one cannot reliably measure short shutter speeds using a stopwatch, only longer shutter speeds were explored. I was surprised to get a 0.1-0.2 second reproducibility from my consecutive measurements, and I was typically within 0.2 seconds from the camera settings. Speed setting Measured speed Theor. The actual shutter speeds in Av mode are stepless. The actual shutter speed was measured to be 8.71 sec, 9.45 sec, and 9.50 sec with three slightly different camera orientations.