Zooming, Zoom Lock Switch | Tamron AFA010C700, AF061P700, AF061M700

ZOOMING

*Rotate the zoom ring while viewing through the camera's viewfinder and compose your image with the correct focal length obtained.

ZOOM LOCK SWITCH

This lens is equipped with a newly developed zoom lock switch mechanism, which prevents the lens barrel from extending toward long focal lengths by their own weight, while hanging off the shoulder, or a chair for example. Activate the switch at 28mm setting to stop the lens barrel from rotating and extending.

How to activate the zoom lock switch mechanism:

1.Locking: Set the lens to the 28-mm position. Move the switch toward the camera, until the index lines align with each other. The lens barrel is now locked in position and does not rotate or extend by its own weight.

2.Releasing: Push the switch away from the camera. The lens barrel is now free to rotate and extend for zooming.

*The zoom lock switch can not be activated unless the lens is set to the 28-mm posi- tion. 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 while lens barrel is locked by the switch.

*The zoom lock mechanism is made to prevent the lens barrel from extending while carried around. 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

*Setting the lens f-numbers with Canon and Minolta cameras

Set the f-number with the 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 lens f-numbers with Nikon and Pentax cameras

Photographing in a programmed-AE or a shutter-priority AE mode, rotate the lens aperture ring to the minimum aperture setting position, in case of a Nikon camera, and set on the "A" position in case of Pentax camera. The aperture ring will be locked in position automatically. When shooting in aperture priority-AE or manual exposure mode, release the lens aperture ring by rotating the ring from the AE lock position by depressing the Aperture ring lock button.

**The lens aperture varies with zooming movement. Cameras read the different lens openings and automatically adjust the exposure properly.