POSTED ON Wednesday, January 11, 2012 AT 10:14AM
A filtered view
of a sunset comes through a new neutral-density filter delivered for Christmas.
WALLA WALLA UNION-BULLETIN
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A secretive Santa’s elf slipped a gray, graduated neutral-density filter into my stocking where I found it on Christmas morning.
It screws onto the end of a camera’s lens.
The dark half of it, normally turned to the top, resembles sunglasses.
With this filter in place, a photographer sees the top half of a scene, say a sunset, through the lens darkly. He sees the bottom half of the scene through the lens lightly.
This allows a digital camera to recognize both halves of a contrasting bright-dark scene without over-lighting one half or under-lighting the other. It can balance the scene.
More or less.
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