Kodak DCS 700 - Manual (Page 124)

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In the following situations, ignore the in-focus indicator (•).
✔ When the subject is obscured by an object such as a fence in the foreground, use
Single Area AF mode and select the subject’s focus area (described on page 7-1) or
focus manually with the clear matte field.
✔ With an extremely bright object near your subject, use Single Area AF mode and
select the subject’s focus area, or focus manually with the clear matte field.
✔ When using a linear polarizing filter or other special filter such as a soft-focus
filter, focus manually with the clear matte field.
☛
A circular polarizing filter can be used in connection with autofocus operation.
IR Filter or Anti-aliasing Filter: Effect on Focus
The IR or Anti-aliasing filters cause the distance indicator on your lens to show that an
object is closer than it actually is. This is particularly true when you use a wide angle lens.
The anti-aliasing filter also slightly increases the minimum distance at which you can
focus. It does not affect focusing, either manual or automatic.