This chart from the Bob Atkins site may be of some use for you: http://www.bobatkins.com/photography/eosfaq/manual_focus_EOS.html
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Type: Posts; User: msowsun
This chart from the Bob Atkins site may be of some use for you: http://www.bobatkins.com/photography/eosfaq/manual_focus_EOS.html
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This FPS slow-down in low light conditions is due to Canon's iFCL metering which is in the 7D, 60D, 70D, 5D Mk III and probably all other newer Canon cameras. ...