Thanks for reply,
Ok maybe I wrote not clear enough - attached what I want as the goal.
So, the picture has 3 main elements:
1. knob with shadow
2. lights
3. grey background
My goal is to render out DIRECT a png file where the original grey background (3.) does not exist No further Photoshop should be required. In the attachement is a png. So, if you would have some new red background, you would see the new red background behind the knob & lights (attachment "bg-example").
The lights & the knob with the shadow (1+2) have to be still fully visible.
Again: Render out a totally normal png file (Knob, Shadows, Lights), only without the grey background of my first post, no further Photoshop actions should be required, just a png with transparency.