Tony,

Re the rules of exposure you posted:


>I've read several rules of thumb about exposure:
>1. Green trees/grass

These are really a bit darker than the 18% grey card.

>2. Skin (caucasian)
>is equivalent to a gray-scale card.

Not at all. Average caucasion skin is one stop lighter than the grey card -
a Zone VI. You can take a meter reading off your hand and then close down a
stop that will get you in the ballpark for exposure.

A medium red is probably the closest to a grey card.

>In practice, I've found that they can
>differ and it sometimes, but not always, shows in my slides.  How do you
>all check your exposures?  (Carry a gray-scale card around?)

When shooting transparencies I almost *always* use a hand held incident
meter. It is usually right on, no need to bracket. Saves worry and money on
film.






Lara Hartley
Photographer
Desert Dispatch
Barstow, California




--> SPORRS: Serious Photographers of Railroad Related Subjects


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