Default is 0.01. This is the same default as the Unity Sprite system so it means 100 pixels per unit. Your ortho scale depends on your resolution if you want to stay pixel perfect. If your screen is 1000 pixels tall, your ortho value should be 1000 / 200 = 5. This means that a 1 Unit Cube will be 100x100 pixels.
Default Mix is 0.2 seconds
