Steve Gong Blog
http://www.youtube.com/user/DigitalRevCom
http://www.youtube.com/results?search_query=Canon+EOS+5D+Masterclass+in+depths&oq=Canon+EOS+5D+Masterclass+in+depths&aq=f&aqi=g1&aql=&gs_l=youtube-psuggest-reduced.12..0.3791l3791l0l4566l1l1l0l0l0l0l188l188l0j1l1l0.
http://www.hkzooo.com/gn/
center weighted- canon measure on center not focus pointhttp://www.youtube.com/results?search_query=Canon+EOS+5D+Masterclass+in+depths&oq=Canon+EOS+5D+Masterclass+in+depths&aq=f&aqi=g1&aql=&gs_l=youtube-psuggest-reduced.12..0.3791l3791l0l4566l1l1l0l0l0l0l188l188l0j1l1l0.
http://www.hkzooo.com/gn/
順光-best use matrix metering
側光-center weighted
逆光-matrix metering for 剪影 metering, iso,構圖，快門/光圈 flash metering
http://photonotes.org/articles/eos-flash/index2.html#confusion custom fn I7 flash sync in av mode
