MCTuomey
Veteran
Not an opinion. Quotes from the manufacturers' instructions.
I've been using those instructions to meter with incident meters since 1967. It's given me perfect reference exposures for all average subjects (and of course backlighting is not an "average subject" situation).
The purpose of the hemispherical integrating dome and pointing to the camera position without shading the meter is so that the meter sees the light incident to the subject from the perspective of the camera lens. That's why they recommend this metering technique.
I just quote from credible sources what I know works, that is, from the people who designed the meters and how to use them. But you'll argue as if you know better anyway. Enjoy your experimentations.
G
I sure don't believe I "know better," just pointing out that there are exceptions to the "point the meter at the camera" instruction you quoted above. Which is what this thread is partly about. Maybe best I leave the room now.