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Sharpening
Your DCS 620, 620x, or 660 camera is equipped with an antialiasing filter, an optical filter
that is mounted inside the camera in front of the electronic imager. This filter improves
overall image quality at the expense of a small loss of sharpness in the image. In general,
sharpen the image when the antialiasing filter is installed. There may be special situations
where you will not want to sharpen, or where you want to remove the antialiasing filter.
When you use the DCS Host software with your camera, you can specify whether you
want the image sharpened. To use the Sharpening feature, you may need to change settings
on both your camera and in the DCS Host software.
☛ The Sharpening feature does not work with the 660M cameras.
The antialiasing filter uses optical design to reduce or eliminate the high-frequency image
patterning problems associated with single-shot digital capture and interpolation. The
optical effect causes a small change in how lenses perform compared to cameras without
the filter installed. The auto-focus capability adapts to the presence of the antialiasing
filter and will compensate for any variations under normal use.
If you choose Manual focus, be advised that zoom lenses experiences a shift in the focus
point as the focal length of the zoom is changed. If you zoom into your subject matter for
close focus, and then zoom out to compose your image, the focus point will change. This
is easily remedied by only focusing at the zoom setting that you will capture the image
with, or reverting to auto-focus and allowing the focusing computer to accommodate the
antialiasing filter’s optical effect.
Preparing for Sharpening in the DCS Host software
You can set a camera property that tells the DCS Host software whether sharpening should
be applied. Refer to “Enabling Sharpening” on page 4-4.
For information on the Sharpening function, refer to the KODAK PROFESSIONAL DCS
Host Software User’s Manual on the DCS Host Software CD included with your camera.