Early American Computer Animations programme at the NFT as part of Node London. Interesting films by John Whitney, Lillian Schwartz, Pierre Hebert and others. The speaker who introduced the films talked a little bit about the technical process. I didn’t realise that the films were made frame by frame, outputted from the computer then optically printed, taking 3 months to make a 3 minute film. I particularly enjoyed the experiments in perception, where colours and shapes would move and strobe to produce optical illusions.