In a similar vein, when raycasting was being added to second life I built a rudimentary approximation of a camera. It took some time to put together an image be

In a similar vein, when raycasting was being added to second life I built a rudimentary approximation of a camera. It took some time to put together an image because of the limits of SL scripting and the rate limits on raycasting, but the first successful image had incredibly obvious vignetting. The solution was changing the size of my 'aperture' equivalent. It's always very cool when simulation behavior starts to resemble real behavior.