According to latest rumors Canon is working on upgrading its flash system based based on new metering technology, The main light-metering technologies are known as A-TTL, E-TTL, and E-TTL II… and the upcoming technology will be called E-TTL III.
The Canon will sure bring a bunch of improvements in the upcoming E-TTL III flash units that will also include covering the lag behind Nikon in flash metering technology.
The announcement is expected in 2016, no more details available right now.
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