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Cross-coupling

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Demian

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Hi, I'm translating a user's manual of an old film camera and I don't know what a part does.

Like other Spotmatics, the K1000 uses an electrically cross-coupled exposure meter. Changing the shutter-speed setting, the film-speed setting, or the diaphragm opening programs a resistance value into the exposure-meter system.

What does it mean that the exposure meter is "electrically cross-coupled"?
 

MrAl

Well-Known Member
Most Helpful Member
Hello,

Sounds to me that it is just connected to other things in the system and the automatic setting is dependent on those other things. So it is coupled to several other things that's all.
 

gophert

Well-Known Member
Most Helpful Member
Hi, I'm translating a user's manual of an old film camera and I don't know what a part does.

Like other Spotmatics, the K1000 uses an electrically cross-coupled exposure meter. Changing the shutter-speed setting, the film-speed setting, or the diaphragm opening programs a resistance value into the exposure-meter system.

What does it mean that the exposure meter is "electrically cross-coupled"?

I think a better word for the original text would have been "electrically interconnected". The exposure meter checks the value of the different exposure-related items on the camera and film cartridge. The F-stop setting of the aperature (on the lens), the shutter speed, and the ISO rating (sensitivity) of the film.

Note that "Aperture" is a better word than "diaphragm" in American-English photography/optics. I don't know what people in the UK call the thingy that attenuated the amount of light into the camera and allows greater or lesser depth-of-field in the image.
 
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