I just realized also that you might not know the terms that is used with SH3D... I hope I am not telling you something you have already found out...

A render is the "photo" that SH3D takes when you click on the Take Photo option. And a renderer is the render engine that a program uses to make those "photos". SH3D has a built in renderer from Sunflow. And depending on what resolution you want your "photo" or render at, you can get very realistic results.