unpopular
Been spending a lot of time on here!
So lately I have been doing some snooping around to see how my camera, meter and RAW processor interact, and I found some interesting things:
First of all, my light meter does not reflect middle grey in RGB. When null, the meter records something like 28% greyscale, rather than referencing at 50% when using the default parameters in Raw Photo Processor.
I can adjust this using a "brightness" parameter, which functions similarly to Gamma, but in the "film" curve type in RPP, and now have my meter nulled out to 50% greyscale. This places -5ev/Zone 0 at 7% greyscale and +3.6ev/Zone VIII+2/3 at 95% greyscale.
But I am curious what exactly is causing this. Is the meter off - or is it something in the curve? I read something about 12% and 18% meters in RPP's manual, and that you can somehow switch between the two - but I thought this was more about the zone system UI.
At any rate, when you process middle grey, does it come out to 50%, or some other value?
First of all, my light meter does not reflect middle grey in RGB. When null, the meter records something like 28% greyscale, rather than referencing at 50% when using the default parameters in Raw Photo Processor.
I can adjust this using a "brightness" parameter, which functions similarly to Gamma, but in the "film" curve type in RPP, and now have my meter nulled out to 50% greyscale. This places -5ev/Zone 0 at 7% greyscale and +3.6ev/Zone VIII+2/3 at 95% greyscale.
But I am curious what exactly is causing this. Is the meter off - or is it something in the curve? I read something about 12% and 18% meters in RPP's manual, and that you can somehow switch between the two - but I thought this was more about the zone system UI.
At any rate, when you process middle grey, does it come out to 50%, or some other value?
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