I mentioned some time ago that i would post the test results when I got around to testing this lens.
The lens speeds measured were as follows { setting, millisec}
{1,880}, {2,480}, {4,240}, {8,128}, {15,70}, {30,35}, {60,16}, (125,11}, {250,5}, {400,5}
I thought the speeds were quite good for such an old lens. (I don't know if it was ever serviced).
I then went on to do some more detailed tests at the 1/250 setting.
The tests were to see the difference in shutter open time at the f/- stops f/4.5 and f/32, and the difference in brightness levels between the frame axis and the frame edge.
Here is a link to a jpg summarizing those tests along with waveforms taken with a digital camera from the vintage Tektronix 466 analog storage oscilloscope.
https://app.box.com/s/6d06x1j0n6dm5et3jmypxpijpscdym8a
regards!
The lens speeds measured were as follows { setting, millisec}
{1,880}, {2,480}, {4,240}, {8,128}, {15,70}, {30,35}, {60,16}, (125,11}, {250,5}, {400,5}
I thought the speeds were quite good for such an old lens. (I don't know if it was ever serviced).
I then went on to do some more detailed tests at the 1/250 setting.
The tests were to see the difference in shutter open time at the f/- stops f/4.5 and f/32, and the difference in brightness levels between the frame axis and the frame edge.
Here is a link to a jpg summarizing those tests along with waveforms taken with a digital camera from the vintage Tektronix 466 analog storage oscilloscope.
https://app.box.com/s/6d06x1j0n6dm5et3jmypxpijpscdym8a
regards!