Catalyst pictures

[samsc]

I am redering 3d models to jpeg's. What color in the backgrounds would you recommend that look the best? Black, white, etc?

My feelings would be black - if you cant use alpha channels.

But you need to test, depends on how much black you have in your foreground object.

Catalyst also works with alpha channels in images directly.

So you can just create a tiff image with an aplha channel - where you want the area to be transparent.

jpegs, dont allow any transparency information - ( last time i checked )
TIFF files do.
Photoshop files also do - but you have to get the right layer and save settings.

I have created a tif file in photoshop - with the words 'TEST' in red on a transparent background.
If you load this into catalyst, the red letters will be transparent.