<< If I shoot a side-lit flower against a dark background, exposing for the
proper values of the flower itself, and not an average of the whole scene,
I should get a properly exposed photo of a flower against a dark
background.
>>
Loony f /4 is taking photos of objects illuminated BY the moon, not
photos - OF - the moon.
That would be a loony f /16 (or f /11 depending on what school you
belong to).
<< If I have two flowers of the same value in the scene, my
exposure doesn't change. Why is it different with the moon? The moon is not
a light source per se, but reflected light, just like the flowers.
>>
It also wouldn't matter with moonlit objects if you had 1 or 41
objects in the frame.
>> Maybe, and I'm not talking with any scientific knowledge here, the
difference in reflected light is greater than 1/2 between the full moon and
half moon because in a full moon the light is reflected back to the viewer
but for a
1/2 moon the light is reflected to earth at an angle. Hence, there is a 2
stop difference between full and half moon illuminated exposures.
Just guessing...
Who wants to test this? I'll just use my OM2 I guess.
Warren
<<
The half moon reflects approx. half the light of a full moon back to
earth.
I've never heard of a different angle of the half moon light as
opposed to full moon light striking earth, and would imagine that is
nonsense. We're just dealing with AMOUNT of light striking our
subject, angle shmangle.
The angle of a half and a full moon is still fairly the same. They're
both high in the sky; I don't get what you're saying, sorry.
George S.
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