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Canon Speedlite 550EX
TTL Shoe Mount Flash
Speedlite 550EX is
the main component of a flash system designed
together with the EOS-3 SLR camera. It provides full
compatibility with the area AF technology employed
by the EOS-3 and refined E-TTL autoflash for
improved performance. Other main features include a
maximum Guide Number of 180 (ISO 100, ft.), an
AF-assist beam which links to the EOS-3's 45-point
area AF, FP Flash (high speed sync), FE lock (a
flash version of AE lock), and FEB (Flash Exposure
Bracketing). The Speedlite 550EX also incorporates a
built-in wireless transmitter, which can control
other Speedlite 550EX units set up as slave units.
Flash coverage is set automatically from 24mm to
105mm, and a wide-angle panel extends the coverage
to 17mm. The Speedlite runs on 4 AA-size batteries,
and can also be used with optional external power
supplies such as Compact Battery Pack E and
Transistor Pack E. Recycling times are faster than
those experienced with the Speedlite 540EZ.
Speedlite 550EX is compatible with all EOS models.
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High-output shoe-mount flash
for EOS System (Maximum GN
55/180, ISO 100 m/ ft.). |
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Autozoom coverage from
24-105mm with 17mm wide
panel built-in. |
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Compatible with all EOS
cameras, but has special
features when used with
EOS-3. |
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Supports Wireless Flash with
EOS-3 and Speedlite
Transmitter ST-E2. |
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Supports E-TTL, FEL and FP
flash (High-Speed Sync) with
selected EOS cameras. Other
useful features include
flash exposure compensation,
flash exposure confirmation,
flash exposure bracketing,
second-curtain sync,
variable-power manual flash,
stroboscopic flash and more. |
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Type |
Direct- sync, shoe-mount
flash with E-TTL/TTL
autoflash control and
wireless
transmission/reception
(E-TTL preflash, AF-assist
beam, auto zoom, and bounce
flash). |
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Guide Number |
138' (42 m) at 50mm
180' (55 m) at 105mm |
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Zoom Range |
Auto zoom head covers 24mm,
28mm, 35mm, 50mm, 70mm,
80mm, and 105mm lens focal
lengths automatically.
Manual zoom: Enabled with
zoom button.
Wide panel: When the
built-in wide panel covers
the flash head, flash
coverage is extended for
17mm lens local length. |
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Bounce Capability |
Up Angle: 0° - 90°Click
Stops: 0°, 60°, 75°, 90°
Down Angle: 0° - 7°Click
Stops: 0°, 7°
Left Angle: 0° - 180°Click
Stops: 0°, 60°, 75°, 90°,
120°, 150°, 180°
Right Angle: 0° - 90°Click
Stops: 0°, 60°, 75°, 90° |
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Swivel Capability |
Yes |
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Auto Settings |
Normal flash
Quick flash
High-speed sync (FP flash)
Stroboscopic flash: 41 flash
frequency settings, 31
firing settings
Preflash: Obtains exposure
reading for E-TTL autoflash
control
Test flash: With test firing
button
Modeling flash: Fired with
the EOS-3's depth-of-field
preview button |
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Angle of Coverage |
84° (24mm in 35mm format) to
23.3° (105mm)
103° (17mm) with included
wideangle adapter |
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Recycle Time |
Internal Only:
4 x AA Alkaline Quick Flash:
0.1 - 4 Norm. Flash: 0.1 - 8
4 x AA Ni-Cd Quick 0.1 - 2.5
Norm. 0.1 - 5
Transistor Pack E:
Ni-Cd Pack TP Quick 0.1 -
1.5 Norm. 0.1 - 3
6 x C Alkaline Quick 0.1 - 2
Norm. 0.1 - 5
Compact Battery Pack
CP-E2:
6 x AA Alkaline Quick: 0.1 -
1.5 Norm. 0.1 - 5
6 x AA Ni-Cd Quick: 0.1 - 1
Norm. 0.1 - 2 |
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Power Source |
Internal Only:
4 x AA Alkaline
4 x AA Ni-Cd
Transistor Pack E:
Ni-Cd Pack TP
6 x C Alkaline
Compact Battery Pack
CP-E2:
6 x AA Alkaline
6 x AA Ni-Cd |
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Dimensions (W x H x D) |
3.1 (W) x 5.4 (H) x 4.4 (D)
in. |
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Weight |
14.2 oz |
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Notes & Special Features |
Flash duration: 1.2 ms or
less. For quick flash: 2.3
ms or shorter.
Flash metering system:
E-TTL autoflash with instant
metering using a preflash
(with Type-A cameras).
E-TTL autoflash with instant
partial metering using a
preflash (with Type-A
cameras).
E-TTL autoflash with instant
spot metering using a
preflash (with Type-A
cameras).
TTL off-the-film auto flash
metering (with Type-B
cameras). |
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Notes & Special Features |
Flash exposure compensation
adjustable manually with the
Speedlite up to ±3 stops in
1/3- or 1/2- stop
increments.
Flash exposure compensation
adjustable manually up to ±3
stops in 1/3- or 1/2- stop
increments with cameras
equipped with flash exposure
compensation function.
Flash Exposure Bracketing:
Set with the Speedlite up to
+/- 3 stops in 1/3-stop or
1/2-stop increments. |
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AF-assist beam linkage and
range: |
Linked to area AF (45
focusing points), effective
from approx. 0.6 to 10
meters / 2 to 33 feet at the
center and 0.6 to 5 meters /
2 to 16 feet along the
periphery (in total
darkness). |
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Wireless functions: |
Transmission system: Optical
pulse transmission
Configuration: Camera,
master unit, and slave units
Channels: 4 (Master unit)
Transmission angle:
Horizontal: Approx. 80° /
Vertical: Approx. 60° (@ M
24 mm zoom setting) (Manual
zooming of flash head also
enabled)
Range: Indoors: Approx. 12
to 15 meters / 39.3 to 49.2
feet Outdoors: Approx. 8 to
10 meters / 26.2 to 32.8
feet
No. of transmissions:
Approx. 1500 (without master
unit firing)
Controllable slaves: A, B, C
(3 groups) |
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