Meaning of ISO value in digital photography?
In article ,
Whisky-dave wrote:
I did find my first exposure meter the other day, well a bit of it, think the
make was sekonda or similar
sekonic
and it used a CDs cell I think, it had a needle
and a dial and a little plastic cream shutter that rolled over the sensor.
Next time it re-appears I'll have to photograph it.
that's for measuring incident light.
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