It’s an EOS-dedicated, high-output flash unit automatically compatible with E-TTL II, E-TTL and TTL autoflash. It can serve as an on-camera flash as well a master unit or a salve unit in a wireless multiple-speedilite system.
Features & Specification:
Type: On-camera, E-TTL II/E-TTL/TTL auto flash speedlite
Guide Number: 42meters (ISO 100,105mm)
Flash coverage: 12-105mm (14mm with wide panel); Auto zoom; Manual zoom; Swinging/tilting flash head (bounce flash)
Flash duration: 1.2ms or shorter (normal flash); 2.3ms or shorter (quick flash)
Exposure Control
Exposure control system: E-TTL II/E-TTL/TTL autoflash, auto/manual external metering, manual
Effective flash range (with EF50mm f/1.4 lens 1.6-at ISO 100):
Approx. 0.5-30m (normal flash); min. 0.5-7.5m, max.0.5-21m (quick flash); 0.5-15m (high-speed sync)
Flash exposure compensation: manual, FEB: ±3 stops in 1/3-stop increments (manual and FEB can be combined)
Flash Recycling (with size-AA alkaline batteries)
Recycling time: Approx. 0.1-5 sec. (normal flash); Approx. 0.1-2.5 sec (quick flash)
Wireless flash
Transmission method: Optical pulse
Channels: 4
Wireless options: OFF, master and slave
Transmission range (approx): 12-15m (indoor); 8-10m (outdoor) master unit reception angle: ±40° horizontal, ±30° vertical
Controllable slave groups: 3 (A, B and C)
Flash ratio control: 1:8-1:1-8:1 in 1/2-stop increments
Slave-ready indicator: AF-assist beam blinks
Modeling flash: Fired with camera’s depth-of-field preview button
AF-Assist Beam
Linkable AF Points: 1-45 AF points (28mm or longer focal length)
Effective range (approx): 0.6-10m (at center); 0.6-5m (periphery)
Power Source
Power supply: 4 x AA size batteries (Alkaline, lithium or Ni-MH are usable) (not included)
Battery life: 100-700 flashes (with size-AA alkaline batteries)
Wireless transmissions: Approx. 1500 transmissions (with master unit firing disabled and size AA alkaline battery)
External power: compact battery pack CP-E4 (NOT INCLUDED)
Dimensions: 191x 77x 60mm/7.5”x 3.0”x 2.4”
Net weight: 380g/0.8lbs
Package Included:
1 x Mcoplus MCO-580 for Canon
1 x Flash stand
1 x Protection bag
1 x User manual