Blocking the scene was for this step: capture what the camera sees and take it back to the canvas as a reference image. DOTV's Previz has three ways to shoot — one frame of the current view, one at each of four angles around the point you're looking at, or a tight ring of twelve — and the captures go straight onto the canvas, ready to be wired into an image node. This section covers the three ways, where the captures land, and what makes it into the frame and what doesn't.