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ZOOM LOCK SWITCH (Ref. Fig 3 & 4)
Models A09 are equipped with a newly developed zoom lock switch mechanisms, which
prevent lens barrels from extending toward long focal length by their own weight while
hung from shoulders. Activated, the switches at 28mm settings to stop the lens barrels
from rotating and extending.
How to activate the zoom lock switch mechanism
1. Locking: Set the lens to the 28-mm position. Move the zoom lock switch toward
the camera for locking and zoom ring. In case of the model A09, the lens barrel is
locked in position when the portion beneath “Lock” is shown in red and does not
rotate or extend by its own weight.
2. Releasing: Push the switch away from your camera. The lens barrel is now free to
rotate and extend for zooming.
• The zoom lock switch cannot be activated unless the lens is set to the 28-mm
position. Do not force the lock switch or do not try to rotate the lens barrel while
locked.
• The lens can be used at 28-mm setting for picture taking even when locked by the
switch.
• The zoom lock mechanism is made to prevent the lens barrel from extending
while carried around on the shoulder. When not locked, the zoom lens may
change its focal length during a long exposure if used while in a low or high angle
position.
LENS APERTURE AND AE MODE (Ref. Fig. 7 & 8)
• Setting lens f-numbers with Canon & Minolta cameras
Set the f-number with aperture setting device of the camera body in accordance with
the selected photographing mode.
* For further details, please read the instruction manual of your camera.
• Setting the f-numbers with Nikon & Pentax cameras
Photographing in a programmed-AE or a shutter-speed-priority-AE mode, rotate the
lens aperture ring to the minimum aperture setting position, in the case of a Nikon
camera, and set on the “A” position in the case of a Pentax camera. The aperture ring
will be locked in position automatically. When shooting in an aperture-priority-AE or
manual-exposure mode, release the lens aperture ring by rotating the ring from the
AE lock position and depressing the Aperture ring lock button. If your camera is a
Nikon F401 or F50, you can set the aperture to any desired f-number, leaving the
aperture ring at the minimum opening position.
* The lens aperture varies with zooming movement. Cameras read the different lens
openings and automatically adjust the exposure properly.
* For further details, please read the instruction manual of your camera.
LENS HOOD (Ref. Figs. 1, 9, 10 & 11)
A bayonet-type lens hood is provided as a standard accessory. We recommend shooting
with the hood attached whenever possible as the lens hood eliminates stray light, which is
harmful to the picture. However, please be aware of the precautions written below when
your camera is equipped with a built-in flash.
• Attaching the Lens Hood (Ref. Fig. 9 & 10)