Released by Pentax:

Pentax Markets a Compact 18mm~35mm Zoom Lens for Its 35mm-Format Autofocus SLR Cameras

Pentax Corporation is proud to announce the marketing in September of the
smc Pentax-FA J Zoom 18mm~35mm F4~F5.6 AL for use with Pentax 35mm-format autofocus SLR cameras. Featuring an ultra-wide 100-degree angle of view at the 18mm focal length, this compact interchangeable zoom lens produces high-quality images with minimal aberration, thanks to the incorporation of an aspherical lens element.

Featuring a simple, functional design without an aperture ring, this compact, high-performance zoom lens measures only 72 millimeters (2.8 inches) in diameter and 68.5 millimeters (2.7 inches) in length and weighs a mere 190 grams (6.7 ounces). It also features an angle-of-view coverage between 63 and 100 degrees and a minimum focusing distance of 0.28 meters (0.92 feet) for a maximum magnification of 0.18 times. It comes equipped with a lens hood to cut off excessive light and minimize flare and ghost images.

When mounted on the new Pentax *ist D digital SLR camera, this zoom lens offers focal lengths equivalent to 27.5mm~53.5mm in the 35mm format to cover wide-angle to standard ranges.

Specifications
Product Name smc Pentax-FA J Zoom 18mm-35mm F4-F5.6 AL
Lens Constructions 12 elements in 10 groups
Angle of View 100o - 63o
Diaphragm Fully Automatic
Minimum Aperture 22 at 18mm / 32 at 35mm
Photometric Method TTL open-aperture metering
Minimum Focusing Distance 0.28m (0.92 ft.)
Maximum Magnification 0.18X
Filter Diameter 67mm
Maximum Diameter & Minimum Length 72mm x 68.5mm (2.8 inch x 2.7 inch)
Weight (Wo/hood) 190g (6.7 oz.)

Web Address: www.pentax.co.uk