TAKO. INTERNET SEIT 1996.
Olympus-OM

Re: [OM] Re Image resolution

Subject: Re: [OM] Re Image resolution
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Thu, 19 May 2016 15:57:33 -0400
No, I don't agree. The albedo of forest leaves ranges from about 15-18%. That tells me that, although they may be reflecting light like mirrors, they're probably 2-3 stops below direct sunlight.

I can't say that it makes sense to make sure that *no* leaves display blown highlights but any leaf that does have blown highlights will show as white regardless of the color of the leaf or the color of the light that's falling on it.

Sky doesn't alter color but overly bright light from any source does by turning all colors to white.

Chuck Norcutt


On 5/19/2016 7:34 AM, bj@xxxxxxxxxxxxxxx wrote:
Moose wrote a whole lot which is beyond me responding to right now,
except for these two lines.

This has even worse blown highlights.
There are several leaves which have gone completely white.

<http://www.moosemystic.net/Gallery/Others/BSwale/Leaves3.htm [1]>


They seem white for the very good reason that with the sun angle the way
it was, they acted as mirrors directing reflected sunlight directly at
the camera lens.

These leaves are essentially flat, so they make good
mirrors.

For a while I thought they might have been sky showing
through, but could not think of any good reason why sky should alter
colour from blue to white, so thought again.

Acting like mirrors, it
has to be.
--
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