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Re: [OM] How to test "new" OM-4T

Subject: Re: [OM] How to test "new" OM-4T
From: Winsor Crosby <wincros@xxxxxxx>
Date: Fri, 31 Jul 1998 19:24:18 -0500 (CDT)
>On Fri, 31 Jul 1998 20:47, "Terry and Tracey"
><foxcroft@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>>Or if you are in the same light, meter your own skin. I open up one stop as
>>my hand is 1 stop brighter than 18 0rey.
>Now I am a little confused by the "terminology".  If your hand is 1 stop
>"brighter" than 18 0rey, then shouldn't you "close" down one stop to
>compensate (i.e., get back to the 18 0rey measurement) instead of "open"
>up one stop?  It seems to me that if you measure against your hand which
>is 1 stop brighter AND you open up one stop from that measurement, you
>will be over exposing (by 2 stops).
>Or, possibly by "open up" you mean to change the aperture up to a higher
>number, which is actually closing down the aperture?  Can someone help
>me out here and explain the terminology?
>       -Dan
If he uses the metered reading to make the exposure, his hand will be 18%
gray. He has to open up(give more exposure) to make the hand appear normal,
one stop lighter than 18 0ray.  Anything you point the meter at will give
a reading which will be 18 0ray in the photograph. You have to decide how
you want the object you are metering to be rendered. If you want it to be
lighter or darker than 18 0ray you give it more or less exposure,
respectively.  Metering someone with dark skin will give you a reading for
18 0ray rendition. You have to reduce the exposure(usually a stop less
light) to have the skin appear dark in the photo.


Winsor Crosby
Long Beach, California

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