bergytone
Dual sensor box
Here is a shot of the external dual sensor box. The sensors are set up to line up nearly at the edges of a 35mm SLR film window.
A small switch on the back selects which pair is used for making measurements. In this way curtain shutters that move vertically or horizontally can be measured.
After looking at the sensor for a professional shutter tester, I may make those round holes slits instead.
This complicates the light source, in that it needs to be much more direct, and not just diffused light.
Dual sensor box
Here is a shot of the external dual sensor box. The sensors are set up to line up nearly at the edges of a 35mm SLR film window.
A small switch on the back selects which pair is used for making measurements. In this way curtain shutters that move vertically or horizontally can be measured.
After looking at the sensor for a professional shutter tester, I may make those round holes slits instead.
This complicates the light source, in that it needs to be much more direct, and not just diffused light.