Combining the strengths of its predecessor 550EX
while providing additional functions at higher
speeds, the Speedlite 580EX is Canon’s new flagship
flash unit featuring a higher maximum guide number,
shorter recycle time, autozoom control for image
sensor size, and design improvements for easier
handling by digital SLR users ranging from
professional to advanced amateur.
Increased
maximum guide number
With a maximum guide number of 58 (105mm, ISO 100 in
meters), Speedlite 580EX improves on the 550EX
maximum of 55 to optimize flash output and power.
The improved design of the flash head is another
reason for increased flash output.
Shorter
recycle time for capturing best shutter chance
Thanks to modifications to the battery contacts and
recharging circuit, the recycle time of the
Speedlite 580EX has been made 25% shorter than
available with the 550EX.
Styling
and functionality to match the latest line
Reducing width by 4mm and weight by 30g, the
Speedlite 580EX matches sophistication with handling
ease. The flash head’s built-in wide panel expands
flash coverage to suit wide-angle shots of 14mm
angle of view. A catchlight panel generates a
weakened light toward the subject for lively
portraits when extended and the wide panel
retracted.
Function
advantages especially designed for digital SLRs
When the Speedlite 580EX receives image size data
from a supported EOS digital camera, the flash head
automatically zooms to match the effective angle of
view. The resulting flash coverage is more accurate.
When color temperature data is automatically
transmitted from the Speedlite 580EX to a camera,
the camera sets the color balance for the optimal
flash shot.
Stress-free function selection through redesigned
dial
The newly adopted Select dial simplifies the main
operation interface from holding down the + or –
button to turning the dial. Among other advantages,
the new layout adds a high-speed synch button,
centers the SEL/SET button, and relocates wireless
functions to the zoom button.
Retained
and upgraded functions for greater versatility
Flash exposure control system, wireless flash
control with multiple Speedlites, and even
distribution of light over the zoom range are
retained. One new function is the expanded range of
the AF-assist beam, compatible with all EOS AF
cameras, including the EOS 20D. Left-right 180°
bounce, one-touch bounce lock release, and improved
controllability for greater exposure stability are
among the upgraded functions.
