I have a cutout in a photo here, the rest around is transparent.
To further use it in dps velocity I want to save it as a tga file. What is the trick to get an alphachannel that uses the transparent parts.
when I save as tga and then open the file again in PS (CS2) the alpha channel always is pure white. In the 'save as' dialog I can't click the 'alpha channel' checkbox (it's there, but not available).
Maybe I need to say 'add layer mask > reveal selection'. This gives me a mask, but I don't manage to make this an alphachannel.
To get Targa with Alpha versus Transparency you need to use the Photoshop 7 plug-in. In Photoshop 7 Targa was changed to use alpha instead of transparency, but we got a huge number of complaints about the behavior change and had to change it back in 7.01. The plug-in will work in later versions of the application. If running CS3 on Leopard it requires running under Rosetta to get the plug-in to work. If you are using CS3 you can also use Render Video and render a QuickTime Targa image sequence of a single frame to get the desired behavior.
hm, the thing I was looking for I finally found myself by just clicking the "new mask" (or so) button in the bottom of the "Channels". Then 'save as' tga > alphachannel > 32 bit.... (CS2 here by the way)
Now I am a little confused about what you are talking here....