Complete with built-in radio transmission wireless functionality, the Speedlite 600EX-RT sits at the top of Canon's on-camera E-TTL / E-TTL II compatible flash lineup with a powerful guide number of 197' at ISO 100 and 200mm. This two-way 2.4 GHz radio system provides added reliability and a range up to 98.4' among up to 5 groups with a total of 15 individual Speedlites. This system also does not need direct line-of-site like traditional optical-based transmission and will work through obstacles.
For added coverage and functionality, the flash's zoom head can reach from 20-200mm, with the option for wide 14mm coverage when the built-in diffusion panel is used. Also, the unit can tilt from -7 to +90° and rotate 180° either left or right for complete bounce capabilities. On the back of the 600EX-RT is a backlit dot-matrix LCD panel that displays the status and allows users to easily access and change settings. Additionally, the flash is durable with a redesigned contact construction and improved dust and water resistant sealing.
Other capabilities of the 600EX-RT include a stroboscopic mode as well as high-speed, first and second curtain sync settings for more control over your image's final look. The flash is powered by 4 AA batteries which provide a recycle time of 0.1-5.5 seconds, though it does have a port for an optional external power pack. It comes with a color filter holder with case, a light orange filter, a dark orange filter, a mini stand, and a Speedlite case.
|Guide No.||197' (60.05 m) ISO100 at 200 mm position|
|Angle of Coverage||
94° - 12°
Wide-Angle Adapter: 114°
|Vari-Power||1/1 - 1/128|
|Bounce Head||-7° to +90°|
|Coverage||14 mm - 200 mm (Full frame)|
|Distance Range||1.64 to 98.43' (0.5 to 30 m) at f/1.4|
|Zoom Head||Full frame: 20 mm - 200 mm|
|Off Camera Terminal||PC, Proprietary|
|Recycle Time||Approximately 0.1 - 5.5 seconds|
|Flash Duration||0.0018 - 0.0023 sec @ Full Power|
|Compensation||-3 EV to +3 EV (in 1/2 and 1/3 EV steps)|
Distance: Up to 98.43' / 30 m
Method: Optical pulse
Distance: Up to 49.21' / 15 m
|Wireless Communication Channels||4 Channels|
|Wireless Groups||5 Groups|
|Power Source||4x AA Alkaline, Lithium, Rechargeable Ni-MH Batteries|
|Dimensions (WxHxD)||3.1 x 5.6 x 4.9" / 80.0 x 143.0 x 125.0 mm|
|Weight||14.99 oz / 425 g without batteries|