Here is the first of two videos that we shot this week while I was evaluating Canon’s new 600EX-RT Speedlite and the ST-E3-RT Speedlite Transmitter. Go with me on location for a series of quick shoots where I put the new gear to the test indoors and outside. Later, in Part Two, I’ll take you on a detailed tour of all the buttons and menus. It took me about 30-seconds with this new gear to realize that Canon has re-defined the future os Speedliting. After watching this video, I think you’ll understand why!

Also, if you’ve not already read it, you’ll get a ton of questions answered in my First Impressions post.

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83 Responses to Video: Hands-On With The Canon 600EX-RT Speedlite & ST-E3-RT Speedlite Transmitter

  1. Ian Taylor says:

    The amount of info that you have shared with us is fantastic. Can I draw a little knowledge from you please. Can the 600EX RT be fired manually and also trigger other EX600 RT’s. For example, in a dark room, shutter locked open, first flash trigered by sound switch and hence other EX600 RT’s also trigered?
    Thank you
    Happy snapper.

  2. […] longer distances and the ability to communicate through opaque surfaces, like walls and softboxes. Radio wireless was introduced about a year ago with the launch of the 600EX-RT Speedlite and ST-E3-RT […]

  3. Albert Kelterborn says:

    Syl, i was T ONE OF THE SWEMINrs you had when the 600 exert spedlite came out in Hollwood, CA nd the info you provided was great.I continue aLMOST everyday to watch the two videos thou hVE ON KELBY TRAINING BUT I WISH THEY WOULD LET YO DO A VIDEO ON THE NEW 600 EXRT FLQSH AND TRANSMITTER. IN TE FUTURE WILL YOU BE COMING OUT WITH anymore books, you signed the two books f yours for me. Cn you use the new transmitter with th 580 EX or the 580exll?

    thank You,

  4. Albert Kelterborn says:

    Can you use the new transmitter with either the 580EX or the 580EXll?

    • Syl Arena says:

      @Albert – No. The ST-E3-RT transmitter works in radio only. The 580EX and the 580EX II Speedlites only work by optical (light transmission).

  5. Cherry says:


    I have the 600xrt speedlight on 5D Mark III camera, however, I want to use it as ONE flash option OFF camera, do I have to buy the transmitter or can it be fired directly through the camera when off? if yes, what are the settings please? and if not? then is the ST-E3-RT Speedlite Transmitter the only option?

    Many thanks

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