I need to render my stage without Alpha channel (the black bagground) is this possible?
Not exactly sure what you are looking for...
...but if you save your rendering as a JPG file you will not have the alpha channel since JPG does not support Alphas...
Hope this helps
regards
aghis
I rendered in TIFF
And I wan't to remove the black bgg in photoshop.
If ACA2011 could render with bgg as alpha channel (like 3Ds max can do) then it would be easy ind Photoshop just to hide the alpha channel...
so theres my problem..
It is exactly the opposite you are doing...
You need the alpha channel. So when the rendering is over at the bottom of your rendering window you will have a line with the entry of the temporary name of rendered image. You right click on the name a choose save... Then you choose Tiff or PNG and on the options window that will appear you choose 32bits (24bits+Alpha). Then you will get your tiff/png file with an alpha channel in Photoshop.
If you render with a solid colour background then save to TIFF or PNG (use the 32bit+alpha file option), then the background should be an alpha when taken into photoshop.