Canon EOS 40D - Manual (Page 130)

130
3 Appending Dust Delete DataN
3
Photograph a solid-white object.
At a distance of 20 - 30 cm / 0.7 - 1.0
feet, fill the viewfinder with a
patternless, solid-white object and
take a picture.
X The picture will be taken in the
aperture-priority AE mode with an
aperture of f/22.
Since the image will not be saved, the
data can still be obtained even if there
is no CF card in the camera.
X When the picture is taken, the data
will be obtained. When the data is
obtained, a message will appear.
Select [OK], and the menu will
reappear.
If the data was not obtained
successfully, a message to that effect
will appear. Follow the “Preparation”
procedure on the preceding page, then
select [OK]. Take the picture again.
After the Dust Delete Data is obtained, it is appended to all the JPEG,
RAW, and sRAW images captured thereafter. Before an important
shoot, you should update the Dust Delete Data by obtaining it again.
For erasing dust spots automatically with the bundled software, see the
Software Instruction Manual in the CD-ROM.
The Dust Delete Data appended to the image is so small that it hardly
affects the image file size.
About the Dust Delete Data
Be sure to use a solid-white object such as a white piece of paper. If the
paper has any pattern or design, it may be recognized as dust data and
affect the accuracy of the dust deletion with the software.