White Balance
The white balance settings are basically the same as those of the EOS 30D. Only the
color temperature (P) as a preset WB is new. The lowest manually selectable color
temperature has been lowered from 2800K to 2500K in order to cover tungsten light
more effectively. One can now register one setting of personal white balance under <O>
with the provided software. WB correction and WB bracketing settings can now be
canceled with the INFO. button.
Auto Brightness and
In Basic Zone modes, when the image is processed internally (i.e. not RAW or sRAW),
Contrast Correction
image characteristics are detected and are now adjusted automatically during processing
to obtain optimized brightness and contrast.
Sample Adjustment of Brightness and Contrast
* In bright scenes such as at the beach and on ski slopes,
* In the case of low-contrast, hazy scenes, the contrast is adjusted to
EOS Integrated
As in the examples of the EOS-1D Mark III and the EOS Digital Rebel XTi, the EOS 40D
Cleaning System
incorporates the highly practical EOS Integrated Cleaning System to help prevent dust
generation and adhesion of dust to the low-pass filter. Although it is basically the same
system as the one employed in the EOS-1D Mark III, the Self Cleaning Sensor Unit is a
3rd-generation design that uses only 1 piezoelectric element instead of 2, and the unit
is optimized for the smaller APS-C size instead of the larger APS-H size.
The self-cleaning operation can be executed automatically during power on/off, with an
operation time of approximately 1 sec., or manually with an operation time of approxi-
mately 3.5 sec. Dust Delete Data is acquired when the coordinates of dust adhering to
the low-pass filter are detected by a test shot and appended to subsequent images. The
dust coordinate data appended to the image is used by the provided software DPP to
erase dust spots automatically. Dust removal performance and Dust Delete Data
specifications are the same as those of the EOS-1D Mark III.
III. PERFORMANCE
Table 13 Sample adjustment of brightness and contrast
Underexposed AE
underexposure tends to result. The automatic adjustment
makes the highlights brighter, resulting in a more natural
looking brightness.
Low contrast
obtain a clearer and more distinct image.
Underexposed flash
* 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.
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