I am new to Zbrush and I was watching their starting video about masking, When the person in the video spawned the dog in the dog was very smooth and rounded, when I spawned a dog in the dog is very cube like, with edges.
Then the video showed him holding ctrl and making a black circle on the dog for masking, but when I held Ctrl I could not make any circular shapes, it looked more like a bunch of squares forming a shadow. How can I fix this so the model will look smooth and be drawn on smoothly?