Ah that is true, my mistake!

Im using mix windows to zoom into a larger canvas to crop, reposition and keystone them on the final output.

matt_test.jpg

But when i zoom in - the outer parts of the neighbouring circles appear in the keystone window - just want it to only show the circle. We are using a custom version of Catalyst with this feature enabled. Changing this to a 1:1 (500x500) does fill the keystone window with the circle, it just needs a aspect correction to get it looking correct.

ss_mix.png