When I press Col>Txr button, I get 1024x1024 image, but I need it to be bigger and I can’t find how to do that. Can someone help me ?
Thank you in advance!
For PC users: Before using Col>Txr, assign a blank texture of the desired size to the model. ZBrush will transfer the polypaint onto the current texture. If no texture is currently applied, it creates one at the default 1024 size.
For Mac users: Before using Col>Txr, set the desired texture size using the Tool>UV Map menu.
hi,
i have the same problem but with the new version 4.0.
i want a 4096x2048 map and everytime i click on “new from polypaint” zbrush makes me a 2048x2048 map…
is there a button to just get the polypaint in my current selected texture?
thx!
Go to UV map pulldown and select your resolution. I’m not sure if you can make it non square.
i found that some minutes later 
i just made it 4k and scaled it in ps. it just was a base color texture, so no big deal.
thanks!