Canon Speedlite 600EX-RT

Product summary


The Canon Speedlite 600EX-RT Flash New comes with the benefits of wireless technology. Being able to be triggered using radio this Speedlight comes with two way radio communication, a higher zoom coverage range (20-200mm) and higher guide number (197 ft./60m at ISO 100). The Speedlite 600EX-RT Flash now comes with a better dot matrix LCD display which ensures that all important shooting information is right at the fingertips. Additionally the back-lit button offers better visibility in the toughest of lighting conditions.

The two-way wireless communication allows the Speedlite to be controlled from a maximum distance of up to 98.4’ as a part of up to 15 speedlites arranged in 5 groups or less. All communication is done on 2.4 GHz frequencies and there are no inherent limitations as in traditional wireless transmitting devices. A total of transmission channels have been made available and protection is available in the form of radio transmission ID to prevent misfiring due to signal on the same channel.

The Speedlite has been revamped and the new construction boasts better hot-shoe connection. Among many other advantages is included a better flash head durability and an increased resistance from dust and weather. The built in AF assist beam is now compatible with Canon’s 61-Point High Density Reticular AF system (used in the Canon 5D Mark III). Also being fully articulated in 180˚ makes this Speedlite perfect for bouncing and creating soft lighting for portraiture and in other shooting requirements. Available at Amazon | Adorama | B&H

Sample Images by Canon Speedlite 600EX-RT on Flickr


  • New wireless multiple flash system using radio wave communication for enhanced control of up to five groups of flashes.
  • Zoom flash head covers wide range of 20-200mm; maximum Guide Number (197 ft./60mat ISO 100).
  • Redesigned contact construction, improved flash head durability, and exceptionaldust and weather resistance for reliable operation.
  • AF Assist Beam compatible with Canon’s new 61-Point High Density Reticular AF.
  • Dot matrix LCD panel and backlit button provide easy visibility.
  • Color filter holder for attaching Canon and third-party color gelatin filters.
  • 18 Custom Functions and 7 Personal Functions for creative flexibility.
  • Full swivel, 180° in either direction.
  • The Speedlite 600EX-RT is also compatible with a host of Canon’s and other third party color gelatin filters for warming the light.

Product Images

Canon Speedlite 600EX-RT Specifications

Compatible CamerasE-TTL II/E-TTL Autoflash EOS DSLR
Guide NumberThe maximum Guide No. is approximately 196.9 ft./60m at ISO 100 varies from approximately 85.3 ft./26m to 196.9 ft. /60m according to the flash coverage (20to 200 mm).
Number of FlashesApprox. 100 – 700 flashes (with size-AA/LR6 alkaline batteries)
Recycling TimeNormal flash: Approx. 0.1 – 5.5 sec.
Quick flash: Approx. 0.1 – 3.3 sec.
AF Assist BeamSystem: Near-infrared light pattern projection method
Linkable AF Points: Supports 1 to 61-Point High Density Reticular AF
Supported focal length: – EF Lens: 28mm or greater – EF-S Lens: 18mm or greater
Effective Range (Approx.):
At Center: 2.0 – 32.8 ft. / 0.6 – 10 m
Periphery: 2.0 – 16.4 ft. / 0.6 – 5 m
Custom Functions18
Personal Functions7 Functions
Power SourceFour AA-size batteries – alkaline, lithium, or rechargeable Ni-MH usable
External Power SourceCompact Battery Pack CP-E4
DimensionsApprox. 3.1 (W) x 5.6 (H) x 4.9 (D) in. / 79.7 (W) x 142.9 (H) x 124.5 (D) mm
*Excluding color filter holder
WeightApprox. 15.0 oz / 425 g


Canon Speedlite 600EX-RT Press Release (UK)

Speedlite 600EX-RT – Taking creative flash further

The Speedlite 600EX-RT is a high-performance TTL flash unit designed to meet the expanding creative needs of modern professionals. Integrated radio frequency triggering, in addition to standard infra-red wireless flash control, allows photographers to achieve exciting results with complex on-and-off-camera lighting set-ups. Using one master 600EX-RT or the new ST-E3-RT radio-frequency wireless Speedlite transmitter, up to 15x 600EX-RT flash units, positioned up to 30m away, can be remotely triggered – offering great potential to experiment with more creative lighting techniques and effects. EOS cameras with a connected Speedlite 600EX-RT can also be triggered remotely by either model, allowing photographers to explore more extreme shooting angles to produce surprising and inspiring creative results.

Subjects over a wide range of distances can be lit creatively or evenly exposed, thanks to an increased guide number of 60m¹ and wide lens coverage of 20 – 200m. For wide-angle shots, a diffuser adapter can also reduce the focal length to 14mm and the bounce-and-swivel flash head creates more flattering, shadowless effects. Ideal for shooting portraits, a catch-light panel produces natural catch-lights in the eyes of a subject when shooting with bounce flash. Additionally, custom flash coverage options provide more creative scope by using guide number priority to light the subject, while creating slightly darker edges to the frame.

Like its predecessor, the Speedlite 600EX-RT communicates white balance settings to the camera through the hot shoe connection. However, to further balance flash and ambient light, a new colour filter adapter and two supplied colour gels can be fitted to balance the temperature of the flash and create a more natural effect when shooting around tungsten or mercury lighting. When shooting in dark conditions, photographers can also employ the AF-assist beam for accurate autofocus with lenses of 28mm or longer, ensuring the subject remains in focus when the flash fires

Designed for professionals, the Speedlite 600EX-RT and Speedlite Transmitter ST-E3-RT feature a robust, weatherproof design matching that of the EOS-1D X, with a clear LCD display making it easy to select settings and switch between normal flash mode and wireless modes. Powered by four AA/LR6 batteries for added convenience, the Speedlite 600EX-RT offers fast, silent recycle times, allowing photographers to keep shooting and exploring creative lighting effects in all conditions.

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Canon Speedlite 600EX-RT-h

Canon Speedlite 600EX-RT Available at Amazon | Adorama | B&H

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