Pentax SMC-DA 14mm f/2.8 ED [IF] - Review / Test Report
Lens Reviews - Pentax

Special thanks to Henner Friedle for providing this lens!

Introduction

The Pentax SMC-DA 14mm f/2.8 ED [IF] is one of very few ultra-wide angle fix-focal lenses that has been released during the recent years. This is a bit strange because zoom lenses in this range are immensely popular. Obviously Pentax decided to follow a relatively conservative strategy - a 14mm lens may have been ambitious during the film days but within the APS-C scope it is "merely" a lens with a field-of-view equivalent to about 21mm. This is still well within ultra-wide territory but the perspectives aren't quite as dramatic as the ones you can get from competing zooms which go down to 12mm (18mm equiv.) or even 10mm (16mm equiv.) at their widest setting although none offers a large max. aperture similar to the Pentax.

The DA 14mm may not be a Pentax Limited lens but the build quality feels great thanks to an outer metal shell and tight tolerances. The lens features an internal focusing mechanism and it does not change its size regardless of the focus setting. Consequently the front element does not rotate so using a polarizer remains easily possible. The broad, rubberized focus ring operates smooth with slightly higher friction than average

Typical for most Pentax lenses the DA 14mm f/2.8 has no internal AF motor and relies on a slotted drive screw operated by the camera. AF operations generate a moderate degree of noise. The AF speed is very fast on the K10D. Thanks to a "Quick-Shift Focus System" manual focusing is instantly possible once the AF has achieved focus - this works very well and noiseless.

Specifications
Equiv. focal length21 mm (full format equivalent)
Equiv. aperturef/4.2 (full format equivalent, in terms of depth-of-field)
Optical construction12 elements in 11 groups inc. 1 ED element
Number of aperture blades6
min. focus distance0.17 m (max. magnification ratio 1:5.3)
Dimensions84 x 69 mm
Weight420 g
Filter size77 mm (non-rotating)
Hoodpetal-shaped, snap-on type (included)
Other features-



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