Invisible Backgrounds

[samsc]

can you send me your image, or post it here.
So I can check it?

only tiff's get transparency correct, but in photoshop - when you save - there are 3 different settings dialogs that have 'transparent' settings, its a bit confusing.

[samsc]

i just changed the attachment file size limits and added the 'tiff' extension

[samsc]

Looks like there are a couple of issues here,

The main one seems to be photoshop files import with pre-multiplied alpha - which means they look a little wierd.
But tiff files dont which means they composite OK in catalyst.

I have created and tested a few files.

1. Transparent text in photoshop - you have to remove any pixels in the background layer.
2. Transparent text in photoshop saved as a tiff with the setting in the last attachment
3. A blob or brush painting saved as a photoshop file
4. A blob saved as a tiff
5. text photoshop composite in pixelmad shows fringing meaning its pre-multiplied - not quite right
6. text tif composite doesnt show fringing
7. blob photoshop comp shows fringing
8 blob/tif comp doesnt.
9. tiff settings i used, showing transparency setting.