I'm working on a lens that will be used for a Snap Cam installation with a web-cam. I'd like to see how it will look but there are only a very small selection of devices which are simulated. Is there a way to add a custom simulation? I tried 'no simulation' but that still gives me a portrait view... I need something much closer to a square for this particular lens. I tried spectacles too but that uses a transparency and also crops the test video on all sides.