Overview: The Canon
Speedlite 600EX II-RT is designed to provide top level performance and reliability
for professional flash photography with today's most advanced DSLR cameras.
The flash covers a wide range (20-200mm) and distance (up to 197 feet), and the
zoom can configured according to the camera's image sensor size (full-frame or
APS-C). Using 2.4 GHz radio frequencies, the 600EX II-RT can drive a wireless multiple
flash system of up to five groups of flashes. The Speedlite comes with a mini stand,
two color filters, a bounce adapter,
and a soft, padded case.
Compatible Cameras: The Canon
Speedlite 600EX II-RT is designed for use with Type-A Canon EOS cameras that are compatible
with E-TTL II and E-TTL auto flash, and Type-B EOS cameras that are compatible
with TTL auto flash. It
can be used as an on-camera flash that attaches to the hot shoe of the camera,
as a master or slave unit during radio transmission and optical wireless flash
The dot matrix LCD panel graphically displays the various flash modes, Custom
and Personal Function settings and
status indicators, wireless configuration, and all flash settings. With the improved display and
backlit operation buttons, the unit is easy to operate in the dark.
The 600EX II-RT flash attaches to, and makes electrical contact via the camera's hot shoe. Flash
trigger, exposure setting, and focal length (zoom) setting are transferred to
the flash via the intelligent shoe.
Wireless Performance: The Speedlite 600EX II-RT can be used
in comprehensive lighting setups, offering multiple options for wireless flash.
When used with a compatible flash or flash driver mounted on the camera, the
600EX II-RT can operate as a slave unit in an optical lighting setup at
distances of up to 49.2' indoors or 32.8' outdoors. In addition, the flash unit
is compatible with radio-transmitted wireless flash systems with transmission
distances of up to 98.4'. Up to 16 flash and camera units, or up to 5 groups of
flashes, can be synchronized to take simultaneous photographs from different
angles and directions. You can also perform remote control shooting through a
600EX II-RT, when mounted on an EOS digital camera made in 2012 or later (must
be set as slave during radio transmission wireless shooting).
Coverage (Zoom): The flash covers a wide range (equivalent to using
lenses between 20 and 200mm), with a
maximum Guide Number of 197 ft/60m at ISO 100. When the extendable wide panel is
pulled out, the flash coverage widens to 14mm. When Automatic is selected, the
Speedlite 600EX II-RT sets the flash coverage according to the focal length of
the lens being used, and the camera's image sensor size. You can manually set
the flash output from 1/1 (full output) to 1/128 power in 1/3-step increments.
AF-Assist Beam: If the focal point lacks sufficient light or
contrast to achieve focus, the 600EX II-RT's infrared AF-Assist Beam will light automatically to help the camera focus. The
AF-Assist beam is compatible with 28mm and longer focal lengths, and is effective from 0.6-10 meters (2 feet to 32.8 feet) in the
center and 0.6-5 meters (2 feet to 16.4 feet) in the periphery.
The 600EX II-RT flash has a fold out wide panel which covers the lens to extend
the flash to cover a 14mm wide angle lens. This does not include the angle of
view of some fisheye lenses.
Catchlight Panel: The catchlight panel, a thin white plastic
panel that pulls out of the top of the flash head, enables you to reflect light
in a person's eyes to create a more vivid expression. The catchlight panel is
most effective within 4.9' of the subject, and when the flash head is pointed at
90° (straight up) and aimed toward the front.
When the flash is aimed directly at the subject, a harsh shadow may appear
behind the subject. Using the vertical and horizontal adjustments on the flash
to bounce the flash off the ceiling or wall can reduce or eliminate the shadow
for a more natural looking picture. In addition, when the supplied bounce
adapter is attached, you can spread the flash light over a larger area and
suppress the shadows of the subject.
Stroboscopic Flash: When using stroboscopic flash with a
slow shutter speed, you can shoot multiple successive movements within a single
picture. The flash output can be set between 1/4 to 1/128. The flash frequency
can be set between 1 and 500 Hz (number of flashes per second). During optical
transmission wireless shooting, the flash frequency can be set between 1 and 199
Modeling Flash: When the camera's depth-of-field preview
button is pressed, the flash fires continuously for approximately 1 second. This
"modeling flash" lets you check for shadows cast on the subject by the flash
light and the lighting balance during wireless flash photography.
Variable Angle: The firing
direction of the
flash is adjustable. The vertical angle ranges from -7°
(down) through 0° (straight forward) to 90°
(straight up). The horizontal angle has a 360° range (180° left or right).
Custom and Personal Functions: You can make precise
adjustments to various functions and save them as Custom Functions and Personal
Functions. There are 15 Custom Functions and six Personal Functions available:
- Distance Indicator Display
- Auto Power Off
- Modeling Flash
- FEB Auto Cancel
- FEB Sequence
- Flash Metering Mode
- AF-assist beam firing
- Slave Auto Power Off timer
- Slave Auto Power Off cancel
- Flash Recycle with External Power
- Flash Exposure Compensation
- Light Distribution
- LCD Panel Illumination
- Slave Flash Charge check
- LCD Panel display contrast
- LCD Panel illumination color: Normal shooting
- LCD Panel illumination color: Master
- LCD Panel illumination color: Slave
- Quick Flash
- Flash Firing during linked shooting
Color Filters: The Speedlite 600EX II-RT comes with two
color filters (SCF-E3OR1 and SCF-E3OR2) to compensate for the effect of shooting
under incandescent lighting. When the filters are used, automatic correction is
made by the camera's white balance function so the subject and background can be
shot with the appropriate white balance. One of the filters features low density
and low correction effect, while the other filter has high density and
correction effect. The filters simply snap into place over the front of the
Stand: The 600EX II-RT comes with a portable stand that
allows you to stand the flash upright anywhere for wireless flash usage. The
stand also includes a standard 1/4" tripod thread for attaching the flash to a
tripod for multiple flash shooting.
The 600EX II-RT flash uses 4 AA batteries. Alkaline, or Nickel-Metal Hydride
(Ni-MH) rechargeable batteries are recommended. Based on Canon's testing standards, new alkaline batteries yield
approximately 100-700 flashes. During radio transmission wireless, battery life
is approximately 9 continuous hours (master setting off). For optical wireless
shooting, new alkaline batteries will provide power for approximately 1500
flashes (master setting off).
Note: Due to potential overheating issues, Lithium
batteries are not recommended.
Auto Power Off: To save battery power, the flash will turn
off automatically after approximately 90 seconds of idle use. During radio
transmission wireless master flash shooting or during linked shooting, the auto
power off time is extended to 5 minutes. When set as a slave unit, the power off
time is 60 minutes.
Power: On the side of the flash there is an input for an external power
supply (CP-E4 Compact Battery Pack).
- Guide number: Approx. 60m/197' (at 200mm flash
- Flash Coverage: 20-200mm (14mm with wide panel)
- Effective Flash Range:
- Normal Flash: 1.6 to 91.2 feet
- Quick Flash: 1.6 to 48.6 feet
- High-speed Sync: 1.6 to 48.2 feet (at 1/250 sec.)
- Flash Duration:
- 1/1 flash: 1/890 sec.
- 1/2 flash: 1/1200 sec.
- 1/4 flash: 1/2800 sec.
- 1/8 flash: 1/5600 sec.
- 1/16 flash: 1/9700 sec.
- 1/32 flash: 1/15000 sec.
- 1/64 flash: 1/23000 sec.
- 1/128 flash: 1/34000 sec.
- Flash Exposure Compensation: +/- 3 stops in 1/3- or
Recharge Time: 0.1-5.5 sec (normal flash); 0.1-3.3 sec (quick flash)
5.622" (7.556" flash head at 90°)
- Depth: 4.5" (2.5" flash head at 90°)
- Weight: 15.34 oz. (without