Good morning, All;
With the trips in the last few weeks, I have not thought of looking back on this topic. Thank you for the suggestions.
I especially appreciate the suggestions for making my own camera shutter tester.
I admit that my own first "camera shutter tester" was a Tektronix Type 545B oscilloscope with a Type L fast rise plug in to look at the waveform and a Hewlett-Packard 5245L frequency counter in period mode to measure the waveform out of a Texas Instruments 1N2175 photodiode with a power supply in series with it. It was used to check the focal plane shutter calibration of my beloved original Minolta SR-1b with a 58 mm f 1.4 Auto Rokkor PF lens. I ran the test 10 times at each shutter speed and averaged the results looking also for widely disparate data that might indicate a serious problem. None of the results were more than a few percent from the median. I still miss that old camera. Another casualty of the death of a marriage.
My current electronics equipment stable has more modern equipment such as the ubiquitous Tektronix 453 oscilloscope, and others, along with an old Tek 555 Dual Beam Oscilloscope for some special functions and nostalgia. There are also two Tek 575 transistor curve tracers. I do have the electronics capability to do this kind of a thing.
The main reason why I was asking about sources for the accessories for the Kyoritsu Camera Testers is that I have one. I like having the light meter testing capability along with shutter speed tester and the convenience of plugging in the adaptors that covered the various film formats being tested. While I do have some fair electrical standards for testing, I do not have anything for accurately measuring light. I do have cameras from 16 mm through 35 mm and on to 6 by 6 MF gear and ending at a 4 by 5 view camera. There was also the thought of testing camera equipment for friends who may have purchased something through e-Bay or might want to know if the work done on their camera really did accomplish the desired goal. There are also some curious considerations to be given to the way that an in-the-lens leaf shutter works. That has application for older rangefinder cameras as well as large format lenses. There were some special adaptors available through Kyoritsu for these lens tests. These adaptors allowed you to check the shutter speed at different points across the focal plane and watch for slowing due to friction, bounce, or delay of both the opening and closing curtains.
My real results at this point in time consist only of learning that the C. R. I. S. Camera people in Chandler, Arizona are still the North American importer of Kyoritsu Electric Company, Limited camera testing equipment. I have made contact with one person there, but suddenly all communication with him came to a halt. There have been no responses to any of my recent e-mail messages. It is not clear why they do not want to answer questions about what accessories are available for the current model camera testers they advertise.
My goal was to obtain current type adaptors, and fit them with the older electrical connectors if required. This would allow them to be plugged into my older tester for performing those functions associated with testing the various sizes of film formats. At this moment, this plan is on hold. I am equiped only with the testing sensor for the 35 mm format focal plane shutter at this time.
As other advances occur, they will be reported. Thank you for the suggestions and recommendations you have provided.
