Kodak DCS Pro Back Plus, Руководство пользователя

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About the DCS Pro Back Plus
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IR Filter
A removable (page 21) IR filter is included with
the DCS Pro Back Plus. This filter, which is
installed in front of the imager, maintains proper
focus, filters out infrared light to improve image
quality, and helps protect the imager’s
coverglass.
"
For proper focus, you must use either the IR
filter or the anti-aliasing filter.
Anti-aliasing Filter
You can replace the IR filter with an anti-aliasing
filter which can be purchased separately from
Kodak. The filter performs the IR filter functions
and helps reduce aliasing at certain focal
distances.
"
The anti-aliasing filter has a white dot in its
upper-right corner. The IR filter does not.