Press the green flag. Might have to do it twice. This works best in dark conditions, or at least without a very strong light behind you because of how overexposed this is. This camera isn't very accurate or good. It was more of an experiment to see how fast and in how few blocks I could make one. How this works: Scratch doesn't have infinite precision decimal values, so as you decrease the brightness, instead of going into decimals, it just rounds up the brightnesses. So this has a black backdrop and slowly increases the video transparency, and whenever it becomes black, it records it as somewhere between light grey and black, depending on how many reductions it took to get to that point.
@GCgamesandcartoons 's project but it's a video instead of a picture
