BradS
Member
It's a hodgepodge. I've been shooting decades, understand Sunny 16 and while I never used the Zone system, I have a general idea of it. But the article is incomprehensible in the way it was written. If I can't understand his point and what he's talking about, how is a beginner?
The essence of the article is that...
All light meters* give camera settings that result in film being exposed so that, if the film is developed and printed 'normally', an 18% gray card looks grey in the print (again, assuming nominal process parameters). This is often expressed as simply, "the light meter assumes that it is metering an 18% gray". This has some important implications. For example, if you point your hand held reflective meter at a white wedding gown, and process normally, the white gown will be gray. Likewise, if you point the meter at the Black tuxedo, it will turn out grey. And , if you have both the white dress and black tux in the same scene on a bright summer day with strong shadows and meter using sunny-16 or an incident meter or point the built in meter at the grass in front of you, the black will be very black and the white very white. Likely there will be no detail in either of them so...If you want the lace in the white dress to show in the print, and you do not want the dress to be gray, you have to do something (Obviously, getting detail in the dress is more important than getting detail in the groom's black tux!

oh, and the other point that the author (very thankfully) makes is that there's a lot more to sunny-16 than simply, "set shutter speed to 1/(film speed) and set the aperture to f/16"! Properly done, it is FAR more complex than that.
*Note that it does not matter if you're using a $400 spot meter, the meter built into the camera or a hand held meter or, yes, even Sunny-16 (sunny-16 uses the most sophisticated light meter known to exist, the human eyes and brain). All of these light meters, when properly used, give camera settings that make grey look grey. They place 18% gray in zone V.
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