thanks Beppe! What was also throwing me was I didn't realise you have to reload the scene in the Octane viewer after changing transparency, otherwise it doesn't catch up. Works perfectly now

Possibly the stupidest noob question here - so apologies in advance. Apparently "alpha" is too common a term to search for on the forums (some mistake?!)

I'm trying to load a texture which has alpha into an imagetexture node. I've tried png, psd, tga, tif - and none of them work. Using PSDs in C4D ...