This tool has been my best friend for years and years. I must tell you, I still use it and I use the most modern version of this one, because friends are forever.
Today’s cameras are very close to perfection with the metering but in some bouncing situation the exposure can fall or rise even with a difference of 1 stop.
That’s the reason I still use this tool and I ask my assistant to use it.
Except when they ask me “what is that???” and I get crazy…🤪