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Subject: Re: raw 3.1 professional custom profiles for highend digital cameras

John Grimm,

For negative film photography, particularly black and white film, metering on the main subject would be a sound way to proceed. You could then move your subject into the desired Zone.

For digital photography, this would generally result in an underexposed image with most of the shadow detail lost or noisy, because of the linear gamma of digital capture (whereas film responds more like human vision).

Most of this won't be meaningful without hands-on experience with ACR. Moreover, Bruce Fraser's revised book on Real World Camera RAW with PS CS2 contains excellent explanations of how it all works and why it all works.

The bottom line is that you can expose for the main subject and you will get a result that may work. But, you will probably not get the best result that you could and you will definitely not be taking advantage of all that digital capture can offer. You need to reorient your thinking.

I say this with the caveat that this is new to me, too, and that I am learning this as I go. Experiment a lot and take many notes.


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