Canon EOS 40D Service Manual page 12

⑸ISO speed
As with the EOS 30D, the ISO speed range is 100-1600, settable in 1/3-stop or whole-
stop increments. ISO 3200 extension can also be set. The ISO speed is now always
displayed in the viewfinder and on the LCD panel.
●Auto ISO speed enabled in Creative Zone modes
With the EOS 40D, you can now set auto ISO speed
even in the Creative Zone modes (Fig. 004). When
the ISO speed is set to [Auto], ISO 400 is initially set.
Then depending on the lighting conditions, the ISO
speed is set automatically as shown in Table 003.
The automatically-set ISO speed is displayed in the viewfinder and on the LCD panel
while the metering is active.
In the Basic Zone modes, the automatically-set ISO speed range is 100-800 which is
1 stop higher on the high end than the EOS 30D.
Shooting mode
P/Av/
A-DEP
Creative Zone
modes
Tv
M
/
/ /
Basic Zone modes
With flash
２）Image processing
（=EOS 30D)
⑴Picture Styles
The Picture Styles have the same specifications
as the EOS 30D's Picture Styles. The EOS 40D has a
separate Picture Style selection button to make the
selection easier.
⑵Noise reduction
●Long exposures noise reduction
[Off], [Auto], or [On] can be selected.
All manuals and user guides at all-guides.com
Table 003 [Auto] ISO Speed Settings
Set within ISO 400-800 so that the respective shutter speed will not cause
camera shake under the current lighting conditions.
If overexposure will result at ISO 400, a lower ISO speed, as low as ISO 100,
is set.
If overexposure or underexposure will result at ISO 400, the ISO speed is
shifted within 100-800. (=EOS-1D Mark III's C.Fn I-8-2)
Fixed at ISO 400.
/
Automatically set within ISO 100-800, according to the brightness.
Automatically set within ISO 400-800, according to the brightness.
Fixed at ISO 100.
Set to ISO 400 in all shooting modes. If overexposure would result in fill-in
flash, a lower ISO speed, as low as ISO 100, will be set.
（=EOS 30D)
7
General Information
Fig. 004 ISO speed setting screen
ISO Speed Settings
Fig. 005 Picture Style selection screen