Exposure Control; Custom Functions - Canon EOS 30D White Paper

Picture Style and (when the WFT-E1A is in use) Images Failed to Transfer have been
newly added to the camera setting information screen. With previous EOS cameras, an
error code appeared on the LCD panel. On the EOS 30D, and new to EOS DSLRs, the
error code appears on both the LCD panel and the LCD monitor along with appropriate
countermeasures, making it much easier for the user to correct any problem which
might occur.
This is a good example of the kinds of upgrades found on the new camera: thoughtful
revisions, often suggested by users, which enhance the ease of operation and the
overall performance of the EOS 30D.

Exposure Control

The metering sensor is the same 35-zone unit in the EOS 20D. The basic metering
optics are the same as the EOS 20D's, except that the metering sensor's angle of
inclination behind the pentaprism has been optimized to provide spot metering.
With spot metering newly added, covering about 3.5% of viewfinder area at the center,
the EOS 30D now has four metering modes. The other three modes are evaluative (set
automatically in the Basic Zone modes), partial (approximately 9%), and center-weighted
averaged. The algorithms for evaluative metering, E-TTL II and the exposure control modes
(seven AE modes plus manual) are the same as the EOS 20D's.
The ISO speed can now be set from ISO 100 to ISO 1600 in 1/3-stop increments:
100, 125 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1250, and 1600. With
C.Fn-08, [ISO expansion], ISO 3200 can also be set.
With the EOS 20D, the ISO speed could be displayed only on the LCD panel. On the
EOS 30D, the ISO is also displayed in the viewfinder when the ISO speed button is
depressed; setting can now be accomplished without removing one's eye from the finder.
In "ISO auto," the ISO speed range set automatically in the Basic Zone modes is the
same as with the EOS 20D. In the Basic Zone modes, the ISO cannot be set manually,
whereas in the Creative Zone modes, the ISO cannot be set automatically. During
continuous shooting, the ISO speed does not change. In the Landscape mode, if the
shutter speed is faster than 1.25 times the reciprocal of lens focal length, ISO 100 is set.

Custom Functions

The EOS 30D has one new custom function and an addition to an existing one, resulting
in 19 custom functions with 53 possible settings. Entirely new is C.Fn-17, Magnified
view. With option [0: Image playback only], magnified view is possible after one presses
the Playback button to display the image. With option [1: Image review and playback],
magnified view is possible after one presses the Playback button (as with the 0 setting)
as well as during the image review immediately after shooting. During the image
III. CAMERA CONTROLS 10