Lens review
2010-07-20
Pentax smc FA 35 mm f/2 AL
10. Autofocus
The Pentax 2/35 autofocus mechanism is unfortunately neither the fastest, nor the quietest, nor the most accurate. The speed is average but enough in most of applications. During focusing you can hear a distinct “buzz”. The biggest problem is the accuracy, though. In well-lit studio conditions the lens missed in as much as 15% of shots. When you compare this result to 2% reached by the Nikkor 2/35 with a screwdriver motor, the Pentax comes out poorly indeed.
This flaw is all the more serious that we lack here a fully-fledged manual focus ring so the user faces a daunting alternative: either you make an all-out effort fighting with the dummy ring or you trust unreliable autofocus…
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