V. PERFORMANCE, DESIGN AND CONSTRUCTION
23
Autofocus
E-TTL II Autoflash
Power Source, Shooting
Capacity and Startup Time
spot metering feature, the metering zone mark in the center of the viewfinder has been
changed to a spot metering circle which is smaller than the partial metering circle in
the EOS 20D.
The quick-return mirror affords a viewfinder blackout time of only 110 ms at shutter
speeds of 1/60 second and faster. Mirror lockup of up to 30 seconds is set with
C.Fn-12-1. There is no mirror cut-off with lenses up to EF 600mm f/4L USM, a professional
specification. A depth-of-field preview button is provided, enabled in the Creative Zone
modes. With Canon Speedlites 580EX, 550EX, 430EX, 420EX, MR-14EX or MT-24EX,
pressing the depth-of-field preview button fires a modeling flash.
The AF sensor/modes/speed, selection ease, AF-assist
beam and other AF-related specifications are the same as
the EOS 20D’s. With regard to AF precision, further fine-
tuning has been incorporated compared with the EOS 20D.
The specifications of the built-in flash are the same as those of the unit in the EOS 20D:
E-TTL II autoflash, Guide number 13/43 at ISO 100 in meters/feet, coverage compatible
with an EF-S 17mm wide angle lens (equivalent to an EF 28mm lens in full-frame 35mm
format), 91.93mm between the optical axis and the flash head center and maximum
flash sync speed 1/250 sec. To match the EOS 30D’s improved shutter durability, a
highly durable Xenon tube is incorporated to increase the service life of the built-in flash.
Flash exposure compensation can be set in 1/3- or 1/2-stop increments up to +/-2
stops. FEC for both the built-in flash and a Speedlite can be set with the camera.
Autoflash is not possible with EOS-dedicated Speedlites other than the EX-series. The
manual flash mode should be used instead, if it is available. ONE-SHOT AF is recom-
mended for flash photography because the AF-assist beam cannot match predictive AI
SERVO AF. When in the Landscape or Sports mode, use of an EOS-dedicated external
Speedlite is not recommended because the flash would fire at all times whether or not it
was desired. The C.Fn-09 setting applies only to AEB and WB-BKT, so, regardless of
C.Fn-09 choice, the FEB sequence will follow the Speedlite’s setting. Finally, when using
the built-in flash, lens hoods should be detached to prevent flash coverage cut-off.
To compensate for the extra power consumed by the new 2.5-inch monitor,
microcomputer power management has been incorporated. As a result, the number of
possible shots exceeds that of the EOS 20D.
Metering sensor
• The figures above are based on a fully-charged BP-511A and CIPA (Camera & Imaging Products Association)
testing criteria.
Battery Life
No Flash
50% Flash Use
Shooting Conditions
Approx. 1100 shots
Approx. 750 shots
Approx. 900 shots
Temperature
At 20˚C/68˚F
At 0˚C/32˚F
Approx. 600 shots
