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Notes on Accessories
The following conditions do not allow autofocusing or
manual focusing with the in-focus indicator in the view¬
finder. Use the manual focus mode to focus on the sub¬
ject with the aid of the matte field surrounding the
autofocus frame.
a) When using special effect filters or "Magic Image
Attachment" or "Stereo Adapter".
b) When using Extension Tubes or an Auto Bellows for
close-up photography.
Note on the SMC Pentax F SOFT 85mm fy 2.8 lens
When shooting at a distance closer than approx. 1.5m
(4.9ft), set the lens to a manual f-stop setting between
f/2.8 and f/4.5. A smaller aperture (f/5.6 to f/32)
may cause the autofocus system and the viewfinder's
in-focus indicator to malfunction. To remedy this prob¬
lem. temporarily set the lens to f/4.5. After focusing
on the subject, lock focus, and set the lens to the re¬
quired f-stop.
Using A Polarizing Filter
When using an ordinary polarizing filter; a half mirror in¬
corporated into the autofocus system reduces the ef¬
fectiveness of the autofocus function when used in
combination with an ordinary polarizing filter. Use a
CIRCULAR POLARIZING FILTER for proper autofocus
operation.
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