 | | | glow feather problem | glow feather problem 2004-03-04 - By +
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i forwarded that i forgot to add the zero in the minimum levels in the
glow ppg...
but another issue i have rightnow is that the glow disappear when going
further away from those glowing objects. its not because the glow would
be in reality unseen too but because i dont know why... - the objects
nearer to the camera are glowing and they're really not so much nearer
than the other objects which arent. in fact one in the back is even
glowing so i have no clue what's going on.
regards
+ mato
Morten Bartholdy wrote:
>+ is that your name? ;)
>
>Turn on dithering - it will help. The banding is a limitation of the 8 bit
>colorspace, as there are only 256 levels of grey and in this case you see
>the step between 2 levels where there is a large gradient area with only
>subtle change. Only dithering can help until we get 10 bit or more for
>displaying our final material. Obviously if you output to film you could
>render 16 bit imagery which would deal with the problem.
>
>Best Regards
>
>Morten Bartholdy
>3D Animator & Visual Effects Supervisor
>Colorshop VFX
>Denmark
>
>
>
>-- -- Original Message -- --
>From: "+" <softimage@(protected)>
>To: <XSI@(protected)>
>Sent: Thursday, March 04, 2004 10:07 PM
>Subject: glow feather problem
>
>
>
>
>>hello
>>
>>unfortunately i didn't find any answers on boards & list archive so i
>>hope someone could help me asap on this problem...
>>
>>i added a glow to a constant ball and there you see it has a "banding"
>>effect and not a smooth feather... why that? - here is the little
>>screenshot: http://www.mat0.net/temp/ball.jpg
>>
>>and no it's not because of jpg comression (is high)... and the preview
>>region is set on show rgb only...
>>
>>thanks for help in advance
>>+ mato
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