I’ve been experimenting with some advanced chroma keying methods to specifically deal with reflections and subtle details like this car plate.
Often times we use keylight to get rid of everything that is green but in some cases we want to keep some of the reflections to make a shot more realistic. Some of these tips are quite noteworthy because the footage being used is from a Canon 5D which can be particularly noisy due to compression artifacts. Pulling a good key is already challenging enough but leaving in small details without flicker is even more problematic. I think I have figured out a few good methods and we even filmed another behind the scenes video to show how we setup the shots. Look for the video and tutorial soon.