AE 16bit comp to 8bit tif sequence problem

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  07 July 2013
AE 16bit comp to 8bit tif sequence problem

hi,

i am new to 32 bit compositing and have been having a problem with rendering to 8bit images or videos. below is a link to a 32 bit after effects cs6 scene with a white circle on a black background. the border of the circle is blurred and the circle's opacity is set to 1 percent.

when i render an 8 bit tif from the above scene and put that image into a new 8 bit after effects project (see link), the white circle appears way darker than the original. same when rendering a video. a quicktime with png codec is included in the link below.

this only becomes apparent on very dark greys, like when rendering fog with a low opacity value. in photoshop the white in the tif image kind of looks like the original, so i guess this is some kind of color space problem?

what are the correct settings when working with 32 bit? are there any render settings i need to adjust when rendering to 8bit?

my color space in after effects is set to srgb and linearized workspace is on. depth is set to 32 bit.

http://herrschmidt.tv/ae_fog_test.zip

thanks for your help!
 
  07 July 2013
no one? maybe my description is too confusing? sorry about that, here is another try:

when rendering 8bit images out of a 16 or 32 bit after effects project, dark greys appear way darker than in the original version. there is a link to a sample scene above, its just 3mb..
 
  07 July 2013
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