The Canon T-series got a 3-pole connector/wiring. Thus yielding prior to releasing a intermediate/metering position of the release switch, same as with the body release.
Thus offerering the same metering feature when mounting the remote release at some grip.
I considered this standard and never gave it further thought.
Now I realized that my Nikon cameras only got 2-pole wiring, thus yielding solely releasing at the remote release. I am surprised.
To be fair, one may argue on how important such metering feature is, as typically when usung a grip (under the lens, at a ball-had etc.) one wants to use as little manipulation at the camera as possible. And for instance does not want to correct exposure anyway.
Thus offerering the same metering feature when mounting the remote release at some grip.
I considered this standard and never gave it further thought.
Now I realized that my Nikon cameras only got 2-pole wiring, thus yielding solely releasing at the remote release. I am surprised.
To be fair, one may argue on how important such metering feature is, as typically when usung a grip (under the lens, at a ball-had etc.) one wants to use as little manipulation at the camera as possible. And for instance does not want to correct exposure anyway.
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