ok i followed what the nMask guide which was jpeg - but your right a .tiff is giving better results
but there is still what looks like a one pixel around the edge and there isnt full coverage of the color correction, but i suppose if the beauty pass is a antiliased pass and the idpass is a unantiliased thats always going to be the case?
http://www.steakunderwater.com/wesuckle ... 118fded6bcyellow edge showing on cylinder, no full coverage of color correction
beauty pass 32 bit exr, idpass 8 bit tif 1*1 pixel samples pixel filter box
Away from that technique we've worked out how to output seperate masks for each object or shader from 3delight (they are outputted as named aovs) which are giving clean results
I would appreciate any ideas on organising/picking them quickly in fusion. Without having to spend time digging around. I've asked around and there doesnt seem to be as quick a way of picking which mask (as the color picker in the nMask).