Pentax K100D - Manual (Page 190)

188
6
Appe
ndix
Notes on [Using Aperture Ring]
Aperture Ring Use
When [Using aperture ring] is set to [Permitted] in [A Custom Setting]
menu (p.107), 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
e
or b when the aperture is set to a value other than s.
Lens used Exposure mode Restriction
D FA, FA, F, A, M (lens
only or with auto
diaphragm
accessories such as
auto extension tube K)
c (Aperture
Priority) mode
The aperture remains open
regardless of the aperture ring
position. The shutter speed changes
in relation to the open aperture but an
exposure error may occur. In the
viewfinder, [F--] appears for the
aperture indicator.
D FA, FA, F, A, M, S
(with diaphragm
accessories such as
extension tube K)
c (Aperture
Priority) mode
Pictures can be taken with the
specified aperture value but an
exposure error may occur. In the
viewfinder, [F--] appears for the
aperture indicator.
Manual diaphragm
lens such as reflex
lens (lens only)
c (Aperture
Priority) mode
FA, F Soft 85mm FA
Soft 28mm (lens only) c (Aperture
Priority) mode
Pictures can be taken with the
specified aperture value in the manual
aperture range. In the viewfinder, [F--]
appears for the aperture indicator.
When depth of field is checked
(Optical Preview), AE Metering is
switched on. Exposure check is
possible.
All lenses
a (Manual)
mode
Pictures can be taken with the set
aperture value and shutter speed. In
the viewfinder, [F--] appears for the
aperture indicator. When depth of field
is checked (Optical Preview), AE
Metering is switched on. Exposure
check is possible.