David Busch’s Canon EOS 5D Mark IV Guide to Digital SLR Photography by Busch David D

Author:Busch, David D.
Language: eng
Format: epub
Publisher: Rocky Nook
Published: 2017-01-19T00:00:00+00:00

Figure 9.13 Panasonic’s Eneloop AA batteries are a perfect power source for Canon Speedlites.

Speedlite 600EX-RT/600EX II-RT

This flagship of the Canon accessory flash line (and most expensive at about $550) is the most powerful unit the company offers, with a GN of 197 and a manual/automatic zoom flash head that covers the full frame of lenses from 24mm wide angle to 200mm telephoto. (There’s a flip-down, wide-angle diffuser that spreads the flash to cover a 14mm lens’s field of view, too.) All angle specifications given by Canon refer to full-frame sensors, but this flash unit automatically converts its field of view coverage to accommodate the crop factor of the 5D Mark IV and the other 1.6X crop Canon dSLRs. The latest 600EX II-RT version was not available while this book was being written, but Canon states it will have improved continuous flash firing rates (up to 2X faster with an optional CP-E4N battery pack).

The 600EX-RT shares its basic features with the discontinued (but still widely used) 580EX II, described next, so I won’t repeat them here, because the typical veteran Canon owner is more likely to own multiple Speedlites.

The killer feature of this unit is the new wireless two-way radio communication between the camera and this flash (or ST-E3-RT wireless controller and the flash) at distances of up to 98 feet. You can link up to 15 different flash units with radio control, using five groups (A, B, C, D, and E), and no line-of-sight connection is needed. (You can hide the flash under a desk or in a potted plant.) With the latest Canon cameras having a revised “intelligent” hot shoe (which includes the 5D Mark IV), a second 600EX-RT/600EX II-RT can be used to trigger a camera that also has a 600EX-RT/600EX II-RT mounted, from a remote location. That means you can set up multiple cameras equipped with multiple flash units to all fire simultaneously! For example, if you were shooting a wedding, you could photograph the bridal couple from two different angles, with the second camera set up on a tripod, say, behind the altar. A pro shooter might find the 5D Mark IV to be an excellent, affordable second (or third) camera to use in such situations.

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