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Press Release - ข่าวจากแคนนอน
Canon, a leader in
photographic and imaging technology,
today announces the release of a new flagship
to its EX Speedlite range: the Canon Speedlite 580EX. Now Canon's
most powerful flash unit, the Speedlite 580EX has a guide number
of 58 (m/ISO 100 at 105mm) and an adjustable angle of coverage
suitable for wide lenses to 14mm.
Replacing the popular Canon Speedlite 550EX,
the Speedlite 580EX improves on many specifications of its
predecessor, and includes new features to improve digital EOS SLR
flash results. These include transfer of colour temperature data
to optimise the white balance compensation, and auto-adjustment of
the zoom flash position to best compliment the sensor size of the
camera to which the unit is attached.
Circuitry modifications improve on Speedlite
550EX recycle times by approximately 25%. An ultra-bright 3-LED
configuration focus assist-beam has been designed to be compatible
with all focus points within the frame of all EOS AF systems,
including the new EOS 20D 9-point AF. The unit has improved
exposure stability, with a tolerance of just
±0.3
stops.
New features
for full control
An intuitive and ergonomic interface includes a
new select dial for fast and direct control over settings such as
flash exposure compensation. A bounce lock release button provides
immediate control over the bounce head angle. 14 custom functions
can be pre-set for fast access to commonly used settings. Despite
high power and short recycling times, the unit is small and
lightweight. A new left-right 180˚ bounce allows either left or
right vertical camera orientation. A retractable catch light
reflector is built-in for portrait photography.
System flash
The Speedlite 580EX is a key component of the
integrated flash system for both analogue and digital SLR cameras,
and is fully compatible with the distance linked E-TTL II system
found on recent EOS cameras. It serves as a wireless master to
compatible slave units (with up to four channels and three slave
groups), or as a slave to other Speedlites or transmitters such as
the ST-E2.
White balance compensation
Slight variations in a flash gun’s voltage and
brightness can destabilise white balance in respective frames
during continuous shooting. The Speedlite 580EX compensates for
this by transmitting colour temperature information from the flash
to the camera. The camera then uses this information to optimise
the white balance setting for each individual image. This function
works with the camera set to Auto WB or Flash Mode.
Matching sensor size
When mounted to the latest EOS digital cameras
such as the EOS-1D Mark II or EOS 20D cameras, the Speedlite 580EX
receives sensor size information (full frame, APS-C or APS-H) from
the camera.
The flash’s zoom position automatically adjusts accordingly, thus
optimising flash coverage and reducing the amount of charge
required per shot. The Speedlite 580EX distributes a consistent,
even spread of light throughout the entire zoom range.
Fully featured for full control
Features include 1st and 2nd
curtain flash synchronisation, flash exposure bracketing (FEB),
exposure compensation (±3 stops in 1/3 stop increments) and manual
adjustment of flash output (22 levels).
New battery pack
Developed with working professional
photographers in mind, the new external compact battery pack CP–E3
improves flash recycle times significantly and increases to
approximately 432 the number of firings before batteries need to
be replaced.
The pack takes optional rapid-change magazines that can be loaded
with 8 AA-size batteries prior to a shoot to ensure fast, smooth
transitions from one battery set to the next – important in
critical shooting situations or to keep up momentum in the studio.
The CP–E3 battery pack is also compatible with the Speedlite
550EX, MR-14EX and MT-24EX.
New L bracket
A new optional Speedlite Bracket SB-E1 allows the flash unit to be
mounted to one side of the camera. Designed specifically for press
and wedding photographers, it removes the harsh unnatural shadows
that can appear to one side of the subject when shooting in
portrait orientation with camera-mounted flash. Flash batteries
are replaceable without removing the unit from the bracket.
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