Tokina AF 100mm f/2.8 AT-X Pro D macro - Review / Test Report
Lens Reviews -
Nikon / Nikkor (APS-C)
Wednesday, 26 December 2007 05:09
Page 1 of 3
Lens kindly provided for testing purposes by Karsten Scheidel!
The AF 100mm f/2.8 AT-X Pro D macro is one of the latest design's by Tokina -
the smallest of the primary third party lens manufacturers. The lens features
an optimized coating for today's image sensor but it is a full frame lens
which also remains usable on film SLRs. On APS-C DSLRs such as the D200 (used
for testing) its field-of-view is equivalent to 150mm.
The Tokina is a true macro lens providing a min. focus distance of just 0.30cm
(max. object magnification 1:1). Typical for most modern macro lenses its max.
aperture decreases towards very close focus distances. On the D200 the corrected,
effective aperture setting is automatically displayed. As you can see in
the produce images above the lens features 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.
Tokina is a manufacturer that it renowned for lenses with excellent
mechanical qualities of their AT-X (Advanced-Technology Extra) lens lineup
and the AF 100mm f/2.8 AT-X Pro D is no exception here - thanks to metal parts
in conjunction with high quality plastics the lens feels very solid and durable.
The lens has an Armalite finish (crinkle style) similar to the finish
used in some of Nikon's pro grade lenses such as e.g. the Nikkor AF 80-200mm f/2.8 ED D.
The Tokina has 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.
Typical for most conventional lenses in Nikon mount the Tokina has no internal
AF motor and relies on a slotted drive screw operated by the camera. As a result
the AF generates a moderate degree of noise and the AF speed is very slow - a fate
shared by many macro lenses. 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.
|Equiv. focal length||150 mm (full format equivalent)|
|Equiv. aperture||f/4.2 (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)|
|Dimensions||73 x 95 mm|
|Filter size||55 mm (non-rotating)|
|Hood||Barrel shaped (supplied)|
|Other features||One-touch focus clutch. Focus limiter. Provides distance information.|