The HD Pentax-D FA Macro 100mm f/2.8 ED AW from Pentax incorporates an updated optical design and technology to optimize image resolution and contrast and to deliver clear, high-quality images. It is the first Pentax macro lens to feature an AW (All Weather) dustproof, weather-resistant design for high performance in demanding shooting conditions. It can be used under snowy, misty, or rainy conditions and in harsh environments prone to splashing or spraying water.
Boasting a minimum focus working distance of just 5.1", this lightweight lens also incorporates a rounded eight-blade circular diaphragm that produces a natural bokeh effect at aperture f/5.6 or above. The durable black aluminum lens barrel is designed to complement the color of a camera body.