First Impressions: Testing Canon’s New Speedlite 600EX-RT & Speedlite Transmitter ST-E3-RT | PixSylated | Syl Arena's Blog on Light & Imagemaking

First Impressions: Testing Canon’s New Speedlite 600EX-RT & Speedlite Transmitter ST-E3-RT | PixSylated | Syl Arena's Blog on Light & Imagemaking:

Syl says, "The manual says that on pre-2012 cameras (anything other than 1D X and 5DM3), the system takes a one-stop hit in sync speed and that HSS is not possible."   This looks like an important caveat to keep in mind, but one of only a few.  Also, the transmitter doesn't have an AF assist beam, which Syl and I both agree would be welcome.