ASAHI PENTAX Z-70 Operating Manual page 40

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‚ Depress the shutter release button fully, and the
flash unit discharges. After using the flash, retract
the built-in flash by pressing it down into the camera
body.
Flash effective
range
for Programmed
TTL
Auto
Flash with ISO 100 film used
Maximum Lens Aperture
Effective Range
approx. 0.9 - 4.6m (3.0 - 15.1 ft)
172
approx. 0.8
- 3.7m (26
- 12.18)
1728
approx. 07 - 3.3m (2.3 1081)
17351747
'approx. 0.7 - 2.9m (2.3 - 9511)
1766
approx. 0.7 - 2.3m (23- 7.5ft)
The effective range of the flash depends on the maxi-
mum aperture of the lens in use. A lens with a maximum
aperture of #//1.4 is marked as 1:1.4 on its barrel.
36
* This effective range table is only applicable when the
exposure mode is set at the Picture Mode including
the Green Operation Mode, or Programmed AE Mode.
When any other exposure mode is used, see page 68.
* The minimum effective range is always 0.7m (2.6ft)
even when using a lens with a maximum aperture of
£/2.8 or smaller.
When a subject is shot at a distance closer than 0.7m
(2.6ft), the correct exposure cannot be obtained, and
you will see vignetting in the picture corners.
Inappropriate Lens Warning
When using inappropriate F- or FA- lenses, [4 ] in the
viewfinder and on the LCD panel appear when the shut-
ter release button is depressed halfway down.
* For more details on COMPATIBILITY OF F AND FA
LENSES WITH THE BUILT-IN FLASH, see page 69.
* Taking a picture while this warning is displayed will
cause vignetting in the picture corners
or semi-
circular vignetting at the bottom of the picture.
* Keep in mind that when lens other than an F or FA is
in use, this warning will not be displayed.
* Do not use a lens hood as it may obstruct the light
coming from the flash.
* If you load an ISO 400 film, see page 68 on the built-in
flash effective range for the Programmed TTL Auto
Flash.

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