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Black rectangular camera flash unit with tilt-swivel head, textured matte finish

Canon

Canon 0585C006 Speedlite 430EX III-RT camera flash

SKU CH-C52C-Y3MKF MPN 0585C006

A compact camera flash with 2.4 GHz radio triggering, 43 m guide number at 105 mm, and bounce head for Canon E-TTL II systems

  • PartDedicated Flashes
  • SpecificationsNumber of Flashes: Approx. 180-1200 flashes (with size-AA/LR
  • CompatibilityType-A EOS cameras (E-TTL II/E-TTL autoflash)
  • Flash ModesE-TTL II/E-TTL autoflash
  • Guide NumberSupports a shooting angle of view with a lens focal length o
  • Bounce / SwivelTrue
  • 4 GHz radio enables reliable off-camera triggering
  • Guide number 141 ft at ISO 100 and 105 mm gives strong reach
  • 24-105 mm zoom with 14 mm wide panel covers many focal lengths
  • Quick recycle 0.1-2.5 sec keeps pace with fast action
  • Compact 295 g body fits easily in any kit bag

Compact radio flash for Canon EOS

The Speedlite 430EX III-RT is a dedicated Canon flash that adds 2.4 GHz radio triggering to the E-TTL II system. It covers a zoom range of 24-105 mm, extending to 14 mm with the built-in wide panel, and delivers a maximum guide number of 43 m at ISO 100 and 105 mm. Four AA batteries power between 180 and 1200 full flashes depending on settings.

Radio range and recycle limits

The 2.4 GHz radio link works without line-of-sight but is still bound by distance, obstacles and local interference. Recycle time spans 0.1 to 3.5 seconds for normal flash and 0.1 to 2.5 seconds for quick flash when using alkaline AA cells. Ni-MH batteries will change these intervals, and the ready lamp shows red or green to indicate the active mode.

Step up from infrared-only units

Photographers moving from an optical slave or basic E-TTL flash gain off-camera radio control, group firing and the extendable wide panel for ultra-wide lenses. The jump is worth it when shooting events or portraits where flash position must change rapidly and infrared signals would fail. It does not replace higher-output models when maximum power or faster cycling at full output are required.

Highlights

  • 4 GHz radio enables reliable off-camera triggering
  • Guide number 141 ft at ISO 100 and 105 mm gives strong reach
  • 24-105 mm zoom with 14 mm wide panel covers many focal lengths
  • Quick recycle 0.1-2.5 sec keeps pace with fast action
  • Compact 295 g body fits easily in any kit bag

Specifications

BrandCanon
Series430EX IIIRT
Model0585C006
PartDedicated Flashes
SpecificationsNumber of Flashes:
Approx. 180-1200 flashes (with size-AA/LR6 alkaline batteries)
Recycling Time:
Normal flash: Approx. 0.1-3.5 sec.
Quick flash: Approx. 0.1-2.5 sec.
Flash Range:
Effective flash range with EF 50mm f/1.4 lens at ISO 100
Normal Flash:
Approx. 2.3-77.4 ft./0.7-23.6m
Quick Flash (at Guide No. 62.7 ft./19.1m):
Approx. 2.3-44.6 ft./0.7-13.6m
High-speed Sync (at 1/250 sec. shutter speed):
Approx. 2.3-42.0 ft./0.7-12.8m
Custom Functions:
10 Functions
Personal Functions:
8 Functions
CompatibilityType-A EOS cameras (E-TTL II/E-TTL autoflash)
Flash ModesE-TTL II/E-TTL autoflash
Guide NumberSupports a shooting angle of view with a lens focal length of 24-105mm.
The maximum Guide No. is approximately 141.1 ft./43m at ISO 100 and 105mm flash coverage.
When the extendable wide panel is pulled out, the flash coverage is 14mm.
Bounce / SwivelTrue
AF-assist BeamEmission method switchable in Personal Functions between Intermittent flashes and Infrared AF-assist beam.
Emitting small series of flashes is supported during viewfinder shooting, and Quick mode during Live View shooting or movie shooting.
Effective Range (Approx.):
At Center: 2.3-13.1 ft./0.7-4.0m
Periphery: 2.3-11.5 ft./0.7-3.5m
Wireless TriggeringWireless Triggering
Recycling TimeNormal flash: Approx. 0.1-3.5 sec.
Quick flash: Approx. 0.1-2.5 sec.
With size-AA/LR6 alkaline batteries
Flash-ready state indicated by lights (red for normal flash, green for quick flash)
Power SourceFour AA-size/LR6 alkaline or AA/HR6 Ni-MH batteries
ColorBlack
FeaturesCompact, Portable & Indispensable
Power, Over a Wide Range
Simple Advancements for Enhanced Results
More Flexibility for Increased Bounce Options
Dynamic, Flexible Wireless Functions
DimensionsApprox. 2.78" x 4.48" x 3.87" /70.5 x 113.8 x 98.2mm
WeightApprox. 10.41 oz. / 295g
Shipping weight0.45 kg
Package size165 × 149 × 121 mm

Questions about this item

Which flash coverage range should I select for my lens?

The zoom head covers 24-105mm automatically, and pulling out the wide panel extends coverage to 14mm for ultra-wide lenses.

What does the 43-metre guide number mean when I am shooting?

At ISO 100 with the head set to 105mm, the flash reaches about 43 metres, giving correct exposure at f/1.0 or equivalent aperture combinations.

How does the 2.4 GHz radio system limit off-camera use?

The 2.4 GHz radio lets you trigger the flash wirelessly up to 30 metres without line-of-sight, and supports E-TTL II metering with multiple groups.

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