Superior construction, ultra-smooth and quiet autofocus, excellent sharpness -- what else could Pentax shooters want?
Pentax DA * 16-50mm f/2.8 SDM AF
This pro-caliber, standard-range, bright digital zoom ($900, street) is the second Pentax to use sonic-wave autofocusing for very smooth and quiet AF. It works with newer Pentax bodies that accept the KAF2 mount. On older bodies such as the K100, it defers to the noisier, body-housed AF motor. A 24-76mm equivalent, it has three aspheric and two optically pure, low-dispersion glass elements. Special lens coatings resist dust and smudges, and suppress ghosting off the sensor.
Hands On: Its gold accents signal that this is a Pentax DA * lens, with superior construction and extra-tight weather and dust resistance. Like most fast lenses, it's large, casting a shadow at all focal lengths when used with built-in flash. Its manual-focus ring is more than twice the size of its zoom collar, great for manual-focus fans. Both rings are rubber-clad and attractively ribbed, and their turning actions are extremely smooth.
By Julia Silber
more : popphoto
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