Comments about Voigtlander Voigtlander VC Meter II Shoe Mounted Speed Light Meter - Black:
This is by far the best meter for older cameras which don't have an internal meter, and maybe a good choice for some other situations, too. The camera must have an accessory shoe for mounting. It's best attribute is that when you press the button, it takes and HOLDS a light value reading, so that one can then adjust the f/stop and shutter speed dials while pointing the camera in ANY direction, which in practice is extraordinarily useful. Once one has determined the correct exposure on the meter, one must transfer that setting to the camera.