Reviewing Ken Burns’ brilliant new series (An epic and meticulous documentary tracing the history of the Vietnam war, 26 September), Tim Dowling says creating moving images from still pictures is widely known as the Ken Burns effect. That may be true in the US but here it’s much more often associated with the great Ken Morse, whose skill with the rostrum camera was such that he’s said to be the world’s most widely credited cameraman. Morse’s name and techniques are indeed now used on software that does the same job with less physical effort but possibly also less creative imagination. He’s also famous for being the only person apart from Long John Silver to work with a parrot on his shoulder. Ken is alive and well but I have no news of the parrot.
David Robertson
West Malvern, Worcestershire
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