We recommend using it, otherwise the images will look very jagged and ugly. Depth refers to the amount of antialiasing, the higher the value, the better the antialiasing, but it will also be conceivably slower. Threshold determines the limit of antialiasing, the process is interrupted when the difference between pixels is lower than the value in the input field. Light You can set the type of light , the light color and the position of the light source. Type of Light Point light is a sort of spotlight that shines straight onto your image.
Spot light is harder and more focused than point light.
Light color To set the color of the light, press Light source Color button to get to the Select light source color dialog. Z is the depth of the light, where 0 would be the flat surface of the computer monitor. There is no upper limit for this coordinate, there are no limits for X and Y either - the values are only recommendations from our side. Materials You can control different materials' Intensity and Reflectiveness . Diffuse is here the amount of light dark , soft or plastic parts of the image will reflect.