Notes On [36. Using Aperture Ring] - Pentax K20D User Manual

Notes on [36. Using Aperture Ring]

Aperture Ring Use
When [36. Using aperture ring] is set to [Permitted] in [A Custom Setting]
menu (p.75), the shutter can be released even if the aperture ring of the
D FA, FA, F or A lens is not set to the s position or a lens without a s
position is attached. However, the features will be restricted as shown in
the table below.
The camera operates in c (Aperture Priority) mode even if the mode dial is at
B, e, K, b or L when the aperture is set to a value other than s.
Lens Used
D FA, FA, F, A, M (lens
only or with auto
diaphragm accessories
such as auto extension
tube K)
D FA, FA, F, A, M, S (with
diaphragm accessories
such as extension tube K)
Manual diaphragm lens
such as reflex lens (lens
only)
FA, F soft 85mm FA soft
28mm (lens only)
All lenses
Exposure Mode
The aperture remains open
regardless of the aperture ring
position. The shutter speed
c (Aperture
changes in relation to the open
Priority) mode
aperture but an exposure error may
occur. In the viewfinder, [F--]
appears for the aperture indicator.
c (Aperture
Pictures can be taken with the
Priority) mode
specified aperture value but an
exposure error may occur. In the
viewfinder, [F--] appears for the
c (Aperture
aperture indicator.
Priority) mode
Pictures can be taken with the
specified aperture value in the
manual aperture range. In the
c (Aperture viewfinder, [F--] appears for the
Priority) mode aperture indicator. When depth of
field is checked (Optical Preview),
AE Metering is switched on.
Exposure check is possible.
Pictures can be taken with the set
aperture value and shutter speed.
In the viewfinder, [F--] appears for
a (Hyper-
the aperture indicator. When depth
manual) mode
of field is checked (Optical
Preview), AE Metering is switched
on. Exposure check is possible.
Restriction
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