Pentax w Notes on setting “F stop other than A”

Notes on setting “F stop other than A”

When the “F stop other than A” in the custom functions is set to “On”, the shutter can be released even if the aperture ring of an attached lens is not set to the sposition. However, the features will be restricted as shown in the table below.

Lenses	Exposure mode	Restriction
FA, F, A, M, S (lens only,	Aperture-Priority	The aperture remains wide open
or with auto diaphragm	AE mode	regardless of the aperture ring
accessories such as		position. The shutter speed varies
auto extension tube K		according to the aperture ring
		position, however, an exposure
		error may occur. Aperture value
		displays [F--] in the viewfinder and
		[AV--] on the LCD panel.
FA, F, A, M, S (with	Aperture-Priority	Pictures can be taken with the
manual diaphragm	AE mode	specified aperture value,
accessories such as		however, an exposure error may
extension tube K		occur.
		Aperture value displays [F--] in the
Manual diaphragm lens,	Aperture-Priority
		viewfinder and [AV--] on the LCD
such as reflex lens	AE mode
		panel.
(lens only)
FA, F Soft 85mm	Aperture-Priority	Pictures can be taken with the
FA Soft 28mm	AE mode	specified aperture value and
(lens only)		shutter speed, however, the built-
		in light meter does not operate,
		therefore, the exposure cannot be
		evaluated. Aperture value
		displays [F--] in the viewfinder and
		[AV--] on the LCD panel.
All lenses	Metered Manual	Pictures can be taken with the
		aperture value manually specified,
		however, an exposure error may
		occur. Aperture value displays
		[F--] in the viewfinder and [AV--]
		on the LCD panel.

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