of the M4 was wound down in 1972, in favour of the Leica M5
(introduced in 1971). However, the relatively bulky and expensive M5 met
with a cool reception and sales did not live up to Leica's
1977 the company launched the updated M4-2, based on the M4's
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It added a hot shoe and motor drive compatibility as standard,
but removed the self-timer.