Archived posting to the Leica Users Group, 1997/09/25

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Subject: Proven moon exposures
From: Jim Brick <jim@brick.org>
Date: Thu, 25 Sep 1997 23:05:43 -0700

At 10:39 PM 9/25/97 -0500, you wrote:
>At 09:53 PM 9/24/97 -0700, you wrote:
>
>>The reason it doesn't apply is that as you move twice as far away from a
>>subject you will only get one quarter of the light from each square
>>centimeter on the subject, but you will also cover 4 times as many square
>>centimeters, so the result is that the exposure doesn't change. 
>
>Interesting. But the point is, the sunny 16 rule works with the moon. It's
>a subject in bright sunlight.
>
>=============
>Eric Welch
- -------------------------------------------------------------

Proven moon exposures:

Full moon, clear night, sea level, =sunny 16. Same at altitude, no lights
reflecting in the local atmosphere, basically no local atmosphere =sunny
22. Quarter moon =+3 stops. Thin crescent =+5 stops. Ref: "Astrophotography
for the Amateur" by Michael Covington.

Jim