Tokina AF 100mm f/2.8 AT-X Pro D macro (Canon) - Review / Test Report
Lens Reviews -
Canon EOS (APS-C)
Wednesday, 26 December 2007 13:10
Page 1 of 3
Lens kindly provided for testing purposes by Stefan Jahr!
The Tokina AF 100mm f/2.8 AT-X Pro D macro is one more third-party offering
in the popular macro lens arena. It is part of Tokina's professional grade
AT-X (Advanced-Technology Extra) lens lineup. The lens features
an optimized coating for today's image sensor ("D" = Digital) but it is a
full frame lens so it can be used both on film and digital SLRs. Within the
tested APS-C DSLR scope its field-of-view is equivalent to 160mm.
Tokina is a manufacturer that it renowned for lenses with excellent
mechanical qualities and this is also true for the AF 100mm f/2.8 AT-X Pro D.
Thanks to metal parts in conjunction with high quality plastics the lens feels
very solid and durable - there's no wobbling whatsoever here.
The lens has an Armalite finish (crinkle style) similar to some of Nikon's
pro grade lenses. As you can see in the product images below the lens uses a
linear-extension system for focusing so it extends quite a bit when focusing
towards closer distances. The supplied lens hood adds a some cm on top but due to
the recessed front element of the lenses this is really an optional item.
The Tokina features a so-called focus clutch mechanism - the focus ring can be
moved back and forth in order to change between AF and manual focusing.
You can do so at any focus position which is an improvement over earlier
implementations of the idea. In manual focus mode the focus ring feels extremely
smooth and very well damped - about as good as it gets here.
The front element does not rotate so using a polarizer is no problem.
The Tokina has a conventional AF micro-motor which is a bit on the slow side.
Unless you use the lens for macro photography it is a good idea to take advantage
of the focus limiter in order to avoid excessive AF hunting. The AF accuracy
of the tested sample was exceptional even on the rather unreliable EOS 350D.
|Equiv. focal length||160 mm (full format equivalent)|
|Equiv. aperture||f/4.5 (full format equivalent, in terms of depth-of-field)|
|Optical construction||9 elements in 8 groups|
|Number of aperture blades||9|
|min. focus distance||0.30 m (max. magnification ratio 1:1, ~11 cm min. working distance)|
|Dimensions||73 x 95 mm|
|Filter size||55 mm (non-rotating)|
|Hood||Barrel shaped, snap-on type, supplied|
|Other features||One-touch focus clutch. Focus limiter|