I'm attempting to try and make a camera so that it gives a "fish bowl lens" effect for instance like when looking through a peep hole of a door. A side form maybe changing the focal length are there other methods to sort of round out the view for instance I thought i remembered finding a download on here with a camera that had a sphere cut off in front of the camera and the half dome distorted the image viewed if anyone knows any ways to accomplish this or has the link it would be greatly appreciated. I attempted searching the site and forums but couldnt find it. Thanks
A really simple trick is to parent a camera to your main camara, Y rotate it 180 degrees and parent a reflecting half sphere to the reverse camera, and render with the reverse camera in stead of your main camera.
Or use mentalray lense shader (this ones documented by the way how to code)