Pentax K100 D specifications Aperture Ring Use

188Notes on [Using Aperture Ring]

6 Appendix

Aperture Ring Use

When [Using aperture ring] is set to [Permitted] in [ACustom 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
		The aperture remains open
D FA, FA, F, A, M (lens		regardless of the aperture ring
only or with auto	c(Aperture	position. The shutter speed changes
diaphragm		in relation to the open aperture but an
	Priority) mode
accessories such as		exposure error may occur. In the
auto extension tube K)		viewfinder, [F--] appears for the
		aperture indicator.
D FA, FA, F, A, M, S
(with diaphragm	c(Aperture	Pictures can be taken with the
accessories such as	Priority) mode	specified aperture value but an
extension tube K)		exposure error may occur. In the
Manual diaphragm	c(Aperture	viewfinder, [F--] appears for the
lens such as reflex		aperture indicator.
lens (lens only)	Priority) mode
		Pictures can be taken with the
		specified aperture value in the manual
FA, F Soft 85mm FA	c(Aperture	aperture range. In the viewfinder, [F--]
		appears for the aperture indicator.
Soft 28mm (lens only)	Priority) mode	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
	a (Manual)	the viewfinder, [F--] appears for the
All lenses		aperture indicator. When depth of field
	mode
		is checked (Optical Preview), AE
		Metering is switched on. Exposure
		check is possible.