It looks like it's 72 pixels. All the alphas I have are pre made from other people, and others are pre loaded in ZBrush. I'm dragging out a few others and it's looking quite bad
The document resolution was 72. I thought that's what you were referring to. The image is 1024x1024 so now I really have no idea why I'm getting these results. It's been like this every time I load Zbrush :/