Tokina AT-X 24-70 mm f/ 2.8 PRO FX Lens パンフレット

ENGLISH

Thank you for purchasing the Tamron lens as the latest addition to your photographic equipment. 
Before using your new lens, please read the contents of this Owner’s Manual thoroughly to 
familiarize yourself with your lens and the proper techniques for creating the highest quality 
images possible. With proper handling and care, your Tamron lens will give you many years of 
photographing beautiful and exciting pictures.





 Explains things you should know in addition to basic operations.

①

 Lens hood  

②

 Hood attaching alignment mark

③

 Hood locking mark 

④

 Filter ring

⑤

 Hood release mark 

⑥

 Zooming ring

⑦

 Focal length scale  

⑧

 Focal length mark

⑨

 Focus ring 

⑩

 Distance scale 

⑪

 Distance mark 

⑫

 Tripod mount 

⑬

 Tripod mount mark 

⑭

 Tripod mount locking screw 

⑮

 Tripod mount release mark (lens side) 

⑯

 Tripod mount release mark (tripod side) 

⑰

 Lens attachment mark 

⑱

 VC (Vibration Compensation) switch 

⑲

 AF/MF switch 

⑳

 Focus limiter 

 VC mode switch 

 Lens-camera interface contacts 

 Screw hole for safety lock screw 

 Safety lock screw (×2)

 Hexagonal wrench

  

A025

  Focal Length 

70-200 mm

 Maximum Aperture 

F/2.8

 Angle of View 

34˚21' - 12˚21'

 Lens Construction 

17/23

  Minimum Focus Distance 

0.95 m (37.4")

  Maximum Magnification Ratio 

1:6.1

 Filter Size ø 77 

mm

  Length 

191.3 mm (7.5")*

 Diameter ø 

88 mm (3.5")

  Weight (with tripod mount) 

1,490 g (52.6 oz)*

 Lens Hood 

HA025



Remove the rear cap of the lens. Align the lens attachment mark 

⑰

 and mounting mark on the 

camera, and then insert the lens.
Rotate the lens clockwise until it clicks and locks. (For Nikon models, rotate counterclockwise.)
To remove the lens, turn the lens in the opposite direction while pressing the lens release button 
on the camera.







 For details, please read the instruction manual of your camera.

To shoot using autofocus (AF), set the AF/MF switch 

⑲

 to “AF”.

To shoot using manual focus (MF), set the AF/MF switch 

⑲

 to “MF”, and then use your hand to 

turn the focus ring and focus the image.



⑩





 Through the full-time manual mechanism, when focusing with AF, it is possible to switch to MF by turning 

the focus ring while the AF/MF switch is set to AF. AF can be resumed by releasing your finger from the 
shutter button and then repressing the shutter button halfway.



 To ensure focus under various conditions, the focus ring 

⑨

 rotates past the infinity (∞) position. 

Accordingly, always check the focus in the viewfinder when shooting with manual focus, even when the 
focus is aligned with infinity.



 For details, please read the instruction manual of your camera.

The VC (Vibration Compensation) mechanism reduces image blur caused by hand-held shooting.

 How to use VC

When you use VC, set the VC switch 

⑱

 to ON.

Press the shutter button halfway and confirm that the viewfinder image is stable before taking 
a picture.

 Switching VC mode

You can switch the VC mode by using the VC mode switch 

.

MODE 1  Basic mode that balances finder-image stability and compensation effects
MODE 2  Panning mode
MODE 3  Mode that prioritizes compensation effects, compensating only at the moment the 

shutter is released.

* MODE 1 and MODE 3 do not support panning.
* For shooting with live view, use MODE 1.
* Settings can be made using TAP-in Utility only for MODE 1.





 Dimly lit locations



 Locations where flash photography is prohibited



 Locations where the footing is unstable





 When a photograph is taken from a vehicle that is shaking greatly



 Shooting during excessive movement of the camera



 When shooting while using a tripod



 Set the VC switch to OFF when taking pictures with bulb photography (long exposures). 

Otherwise, VC may cause a malfunction.









 Do not remove the lens from the camera while VC is on. If the lens is removed while VC is on, the lens 

may make a clicking sound if the lens is shaken. This is not a malfunction. If the lens is installed on the 
camera, and the camera’s power is switched on, the sound stops.



 In MODE 2 and MODE 3, the effects of VC at the finder may be reduced, but this is not a malfunction.



 For Nikon cameras equipped with a built-in flash, VC will be turned off while the built-in flash is charging.

When autofocus is set, switching the focus limiter switch 

⑳

 can speed up focusing.

 To limit the autofocus range to distant (infinity to 3 m) subjects (Ref. Fig.  )

Set the focus limiter switch to “∞-3 m”.

 When not using the focus limiter (Ref. Fig.  )

Set the focus limiter switch to “FULL”.

While looking through the camera’s viewfinder, rotate the zooming ring 

⑥

 of the lens to set the 

focal length suitable for the image, and then shoot.

A bayonet-type lens hood is provided as standard equipment.
We recommend shooting with the hood properly attached because the lens hood eliminates stray 
light that may affect the picture.

 Using the lens hood (Ref. Figs.   &  )

Align the hood attaching alignment mark 

②

 of the hood with the hood release mark 

⑤

 of the 

lens.
Rotate the hood in the direction of the arrow until the hood locking mark 

③

 meets the hood 

release mark 

⑤

.

 Stowing the lens hood (Ref. Fig.  )

You can stow the lens hood by attaching it in reverse.
Align the hood locking mark 

③

 of the hood with the hood release mark 

⑤

 of the lens.

Rotate the hood in the direction of the arrow until the hood attaching alignment mark 

②

 meets 

the hood release mark 

⑤

.



The A025 model comes with a tripod mount. When you use a tripod, lock the lens firmly to the 
tripod using the tripod mount.

 Changing the directional position of the camera (Ref. Fig.  )

When you change the directional position of the camera, you can rotate the lens by loosening 
the tripod mount locking screw 

⑭

.

After determining the shooting position, tightly secure the tripod mount locking screw 

⑭

.

 Attaching and removing the tripod mount (Ref. Figs.   &  )

You can mount and dismount the lens by loosening the tripod mount locking screw 

⑭

, rotating 

the lens, and then aligning the release marks 

⑮

 and 

⑯

 to the same position.

After attachment, tightly secure the tripod mount locking screw 

⑭

.



 The A025 tripod mount can be attached to an ARCA-SWISS camera platform.

We recommend attaching the lock screws in accordance with the camera platform type when you 
use an ARCA-SWISS-standard compatible camera platform or clamp.

 How to use safety lock screws

The safety lock screws 

 prevent the lens/camera from falling from the camera platform 

when a tripod mount is attached to an ARCA-SWISS-standard compatible camera platform or 
clamp.
As shown on the figure, use the hexagonal wrench to tighten the safety lock screws 

 to the 

two screw holes 

.



 After attaching the safety lock screws, the screw heads protrude from the tripod mount bottom surface to 

prevent the lens/camera from falling. For this reason, if you are using a camera platform or a clamp other 
than ARCA- SWISS-standard compatible, you usually do not need to have them attached.



 An internal focusing (IF) system is employed to achieve the minimum focus distance. Because of 

this, the shooting range is wider than that of lenses using other focusing systems when shooting 
at a distance less than infinity.



 Always remove the hood when you use the built-in flash on the camera for flash photography. 

Otherwise, the hood or lens may darken the perimeter of the image. With close-up photography, 
the lens itself blocks the flash, and dark semicircle may appear at the bottom of the screen, even 
when the lens hood is not used. For flash photography, we recommend that you use an external 
flash unit provided by the camera manufacturer.



 Differences in the display systems of cameras may result in the display of values different from 

the maximum and minimum aperture values in the specifications. This is not an indication of an 
error.



 Use with mirrorless interchangeable-lens cameras is not guaranteed.