Tokina AT-X 11-20mm PRO DX Instruction Manual

This Tokina's DX lenses are designed exclusively for use
with DSLR cameras having an APS-C sized image sensor.
AT-X 11-20mm PRO DX
Descriptions of Parts
❶ Manual Focusing Ring
❷ Focus Distance Scale
❸ Focus Distance Index
❹ Zoom Ring
❺ Focal Length Scale
How to Attach/Detach the Lens
Attach/detach the lens to/from your camera according to the instructions in the manual
provided with your camera.
* When attaching/detaching the lens, be careful not to touch the electronic contacts on
the lens mounting surface nor crush these contacts by strong impact.
Focusing
The lens normally focuses automatically when the focus mode switch on the lens is set
to the Auto focus (AF) position. If the clutch position is in the manual-focus (MF) mode,
adjust the focus by looking into the finder and turning the manual focus ring. This lens
also supports focusing through the use of a focusing aid.
■ Caution Regarding the Use of Super-Wide Angle Lenses.
If you are using a super-wide angle lens in multi-point AF mode, it may not auto
focus properly.
Since the depth of field of super-wide angle lens is very deep, the focus detection
becomes very difficult in the periphery of the frame.
If this is the case, use of the central AF sensor is recommended.
One-Touch Controllable Focus-Clutch Mechanism
<How to switch from the Auto focus position to manual focus position>
The lens focus mode can be switched between the Auto focus (AF) and manual focus
(MF) Positions at any time by moving the manual focus ring forward and backward.
* For both Nikon and Canon mounted lenses, it is
possible to use manual focus without switching the
focus mode switch on either the camera body or the
lens to the manual position. In the Auto focus
position the manual focus ring turns freely.
Lens Hood
A lens hood is designed to prevent the flares and ghost images that are caused by strong
diagonal or side rays striking the front of the lens. We recommend that you use a lens
hood to ensure clear, problem-free photo-
graphs and protect the lens.
<How to attach the lens hood>
To securely install the hood, align the
mark on the hood with the hood attach-
ment indicator (●) on the lens, and then
turn the hood clockwise, as viewed from
the front, until a click is heard.
Confirm that the ▼ mark on the hood is
aligned with the center index on the lens.
* When attaching the hood, turn it until you hear a "click" to ensure a secure fit.
If the hood is not attached properly, vignetting could occur.
Nikon Canon
❻ Center Index
❼ Auto Focus (AF) Position
❽ Manual Focus (MF) Position
❾ Hood Attachment Index
Hood Attachment Index
ENGLISH
Instruction Manual
▼mark