Vitoflo wrote in post #16442099
Ok, now let's say that I am reflective metering to read what level of light is at the background (f/5.6) and shoot it at the aperture shown on the meter will a white BG appear gray and a gray BG appear black?
Yes, because a reflected light meter fundamentally takes what is in its view and tries to render it to an average midtone.
A Scandanavian bride in white wedding gown on a snow scene will appear to be a darkish skinned woman in a mid-tone grey gown standing on a ashy grey scene.
A black cat with black leather collar in a coal mine will appear to be a midtone grey cat wearing a grey leather collar in a ashy grey scene.
If you take a reflective reading of the BG and use the aperture shown, then your BG in the image will always come out gray no matter what color the BG actually is.
Hate to disagree, Leo! Ain't so. Not if the target is darker in tone than 18%...this test proves that point:
I just set this up...a darkish maroon blanket set on my midtone bluish loveseat next to my MacBeth ColorChecker; the loveseat is about the same as 18% tonality; the maroon blanket is DARKER than 18% tonality. (18% tonality is the grey patch to the left of the bright yellow patch, BTW)
In the scene is my Minolta Autometer Vf incident meter. I metered with the Minolta, then I shot per the Minolta suggested reading (1/20 f/2.8).
I next metered in Spot mode on the darkish maroon blanket and used that suggested reading (1/13 f/2.8).
Here are the results...
Trust me, the maroon blanket in reality looks similar to the way it appears in the shot to the left
...the incident meter reading; the shot on the right is way too bright (as is the Colorchecker) Both shots were postprocessed to identical values in LR.