The new R6 Mark II is faster and more capable than the R6 in most regards, and it addresses several of its limitations.
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Canon EOS R6 Mark II Review
Canon EOS R6 Mark II: a real concentrate of power, 24 MP, 40 fps burst mode and improved AF and video modes.
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EOS R6 Mark II, a 6ameChanger for Videos and Stills With 6K RAW and 40 fps - Canon Thailand