Canon 40D - EOS 40D DSLR, Service Manual

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Technical Information
4
５）Auto brightness and contrast adjustment
In the Basic Zone modes, when the image is processed internally, the brightness, contrast,
and other image characteristics are detected and automatically adjusted to obtain favorable
brightness and contrast. This is effective in the sample shots below:
Table 003 Sample adjustment of brightness and contrast
Underexposed AE Underexposed flash
* In bright scenes such as at the beach and on ski slopes,
underexposure tends to result. The automatic adjustment
makes the highlights brighter, resulting in a more natural-
looking brightness.
* When the subject is beyond the range of the flash and becomes
underexposed, the automatic adjustment makes the highlights
brighter. This results in a standard flash exposure.
Low contrast
* In the case of low-contrast, hazy scenes, the contrast is adjusted
to obtain a clearer and more distinct image.
６）Image recording to a CF card
The CF card access speed is now 1.7 times faster, thanks to DIGIC III. With the EOS 30D,
if you opened the CF card slot cover while data is being written to the CF card, the image
data would be erased. However, with the EOS 40D (and EOS-1D Mark III), the data writing
still continues even if you open the CF card slot cover. If you open the slot cover, the beeper
will sound and a warning screen will be displayed (Fig. 005) until you close the slot cover.
Also, if you turn off the power switch while data is being written to the CF card, the screen
shown in Fig. 006 is displayed during the writing. When the writing ends, the camera turns
off.
Fig. 005 Open-cover warning screen Fig. 006 Power-off screen
For specifications related to folders and file numbering, see "General Information".