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LENS PORN: Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)
Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)





Tokina's high end consumer lenses were designated with 'AT-X' (super cheap were the 'SZ-X'). Based on my first impression handling this lens, it sure feels like a pro zoom lens in its day!



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Specs


Focal Range:
FX = 28-135mm
DX = 42-210mm

Focusing: 100% Manual

Focus Throw: 90 degrees

Minimum Focusing Distance: 1.7 feet / 0.5 meters

Macro Mode: Yes

Aperture Run: f/4-f/22

Filter Thread Size: 67mm

Push-pull design

Made in Japan

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

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Summary

Pros

Image quality is superb even with fungus in my copy

Sharp, nice contrast

Handles flare like a pro

Excellent build feels like a pro lens

The aperture ring has 2 tabs on the side for comfortable grip

No need for a separate switch or special ritual to get to Macro Mode. Just keep focusing until you get there.

Focus throw of 90 degrees is not too short, not too long, but fluid enough to get smooth focusing.



Neutral

I can't find a copy with Nikon mount. The plastic Nikon bayonet mount will not work here because of the lens weight.



Cons

Very heavy. It's the heaviest lens I've EVER handled. (For reference, my huge Nikkor Reflex C 500mm f/8 mirror lens feels like a feather in comparison to this.

67mm filter thread size is uncommon

Difficult to service, complicated mechanisms inside


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Conclusion


It's rather unfortunate that there's fungus covering a glass element inside the lens, which I can't get inside to and clean. Plus, the mechanism inside is too complicated for me to change the original Pentax K mount into a Nikon mount. If I ever do manage to change the mount (which is plastic), the weight of the lens itself might tear it from the mount. My only method of using this lens on my Nikon D5200 was by removing the mount and 'freelensing'.

Based on my samples, all of which are unedited, I'm very impressed with still how sharp and nice the contrast is considering the amount of fungus inside. Look at the samples below, they handle flare very well. Highlights don't appear overblown.

An excellent lens that eluded me. Someday I hope to find another copy of this lens in Nikon mount. If I do, I'll update this review.

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

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Further Reading







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Samples


Please note that the only way I could use the lens on my Nikon D5200 was via freelensing. Some images may show the effects of light leaks, 'tilt-shift' and inaccurate focus as a result. All images are no edit, no filter, no crop. The aperture is stuck at f/4 so that's the only setting I shot this lens in.

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)

Tokina AT-X 28-135mm f/4-4.6 Macro (Pentax K Mount)



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