Photograph A Solid-White Object - Canon EOS 50D Instruction Manual

3 Appending Dust Delete DataN
About the Dust Delete Data
After the Dust Delete Data is obtained, it is appended to all the JPEG
and RAW images captured thereafter. Before an important shoot, you
should update the Dust Delete Data by obtaining it again.
To erase 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.
Be sure to use a solid-white object such as a new sheet of white 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.
150

Photograph a solid-white object.

3
At a distance of 20 cm - 30 cm / 0.7 ft. -
1.0 ft., fill the viewfinder with a
patternless, solid-white object and take a
picture.
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 card in the camera.
When the picture is taken, the camera will
start obtaining the Dust Delete Data.
When the Dust Delete 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.