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Hi All,
Using an area light with color values greater than one to
'blow out' the lighting on parts of an image, I noticed
some odd effects from the bright area light, so I produced
a scene file to isolate and examine the effects.
The scene file is posted at povray.text.scene-files and
includes some comments; wondering if my conclusions are
correct that this is normal and simply a result of the
color scaling necessary for colors greater than '1'?
This image shows the soft shadow from a very bright
light source, on a surface that has white and dark gray
colors. The top part of the image was rendered using
a bright white light (<1,1,1>*4).
The bottom part was rendered using a bright yellow light
(<1.00, 0.65, 0.35>*4).
The soft shadows on the dark grey parts appear normal
because no scaling was performed on that part, while the
white parts show a truncated soft shadow (and a color
tinge when lit by a yellow light).
Thanks,
Mark Slone
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Attachments:
Download 'sunshadow.jpg' (15 KB)
Preview of image 'sunshadow.jpg'
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