Notes on [36. Using Aperture Ring]

251

Aperture Ring Use

When [36. Using aperture ring] is set to [Permitted] in [ACustom 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 Lwhen the aperture is set to a value other than s.

Lens Used

Exposure Mode

Restriction

D FA, FA, F, A, M (lens

 

The aperture remains open

 

regardless of the aperture ring

only or with auto

c (Aperture

position. The shutter speed

diaphragm accessories

changes in relation to the open

such as auto extension

Priority) mode

aperture but an exposure error may

 

tube K)

 

occur. In the viewfinder, [F--]

 

 

appears for the aperture indicator.

 

 

 

D FA, FA, F, A, M, S (with

c (Aperture

Pictures can be taken with the

diaphragm accessories

Priority) mode

specified aperture value but an

such as extension tube K)

 

exposure error may occur. In the

 

 

Manual diaphragm lens

 

c (Aperture

viewfinder, [F--] appears for the

such as reflex lens (lens

aperture indicator.

only)

Priority) mode

 

 

 

 

 

 

 

Pictures can be taken with the

 

 

specified aperture value in the

FA, F soft 85mm FA soft

c (Aperture

manual aperture range. In the

viewfinder, [F--] appears for the

28mm (lens only)

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.

All lenses

a (Hyper-

In the viewfinder, [F--] appears for

the aperture indicator. When depth

manual) mode

 

of field is checked (Optical

 

 

 

 

Preview), AE Metering is switched

 

 

on. Exposure check is possible.

 

 

 

12

Appendix

Page 252
Image 252
Pentax K20D manual 251, Aperture Ring Use, Exposure error may occur