Specifications

20
The Digit
al Rebel digital control board was split in two so that a revised layout of parts
and a s
treamlined board shape could be employed, reducing size, giving more flexibility
in e
xterior design and making assembly adjustments more efficient.
The DIGIC
II and the newly developed ADIC (Analog/ Digital Integrated Circuit) and TG
(Timin
g Generator) reduce parts count and aid reliability. The 5 hard and
22 fl
exible circuit boards have been more integrated, reducing cost.
The orientation detection circuit in previous EOS cameras had separate switches for
sensing horizontal and vertical. In the 20D, the circuit has one four-way switch that can
detect horizontal and vertical directions. One switch occupies less space and reduces
complexity.
Several useful and important new Canon products will be available at the time of the
EOS 20D’s introduction:
The Battery Grip BG-E2 uses two of the BP-511A/511/512
or 514 batteries that are used singly in the EOS 20D alone.
With the supplied size AA battery magazine, ordinary alkaline,
lithium or NiMH AA batteries can be used. The extra power
provides a useful extension to the shooting capacity of the
20D. Additionally, the BG-E2 has handy vertical controls
for the electronic control dial and the shutter release.
The new Canon Speedlite 580EX is a high-end flash unit
tailored to the digital era. It has a maximum guide number
of 58/191 at ISO 100 in meters/feet. It is equipped with
an AF-assist beam compatible with all EOS AF systems
and dial controls for easier operation. The built-in wide
panel now covers focal lengths as wide as 14mm even on
full-frame EOS SLRs, and a new catchlight reflector is
h
andy for bounce flash photography. The 580EX has a
new and intelligent auto zoom for image size function that effectively raises the actual
guide number for APS-H and APS-C size D-SLRs. Like the built-in flash on the EOS 20D,
the 580EX sends color temperature information to the camera when it fires. Both the
auto zoom and color temperature features will be made compatible with the EOS-1D
Mark II with a scheduled firmware upgrade. There are also 14 custom functions on the
580EX, 8 of which are brand new. The Speedlite 580EX has one new accessory, the
Compact Battery Pack CP-E3, which uses 8 AA-size batteries to
reduce recycling time and
increase the number of flashes per charge.
Two lenses are being added to the extensive system of Canon optics. First is the EF-S 17-
85mm f/4-5.6 IS USM, a powerful standard zoom lens that provides an excellent match
for the EOS 20D. Its zoom range is roughly equivalent to 27-136mm in the full-size
Speedlite 580EX
Battery Grip BG-E2
III. NEW AND IMPROVED DESIGN FEATURES
New Accessories