The refined aluminum alloy body of this lens features a simple drip-proof construction with a compact, lightweight design, eliminating the need for an iris ring. This compact design helps reduce ghosting and flare, enabling superior imaging performance for sharp images with high contrast at all shooting distances, even up to 13cm from the lens to the subject. The use of a round iris diaphragm ensures a natural out-of-focus (bokeh) background effect.

Designed for use on popular PENTAX weather-resistant DSLR bodies, the WR Weather Resistant lens provides a full 1:1 image magnification ratio (1X, Life Size) without the ability to zoom. The D FA series lens features a "full frame" design, making it compatible with PENTAX film and digital SLR cameras, while being optically optimized for digital imaging.

The rounded aperture blades improve the bokeh at wide apertures, creating a silky smooth background de-emphasis. Additionally, the PENTAX SP (Super Protect) coating on the front lens element helps repel dust, water, and grease, while minimizing fingerprints for enhanced durability and ease of use.

The combination of these features ensures superior imaging performance, versatility, and weather resistance, making this lens a reliable choice for various photographic scenarios, from close-up macro shots to outdoor adventures.

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