PENTAX Single Focus Lens HD DA 21mm F3.2AL Limited Black K mount APS-C F/S Track. Following the set lens is limited lenses. This is pursued "taste" all description and use the focal length, high-performance, lightweight, thin lens series.Anti-reflective technology for advanced HD coating and water-repellent coated scratch-resistant, oil-repellent SP used TCM. Shooting will motivate sharp delineation and deep colours, cosy feel. Optics reflection prevention technology revolution for Pentax, HD lens coating surface a special thin film is formed, that reduces the light reflection, it is coated. Reduce the loss of optical coatings and contribute to suppress flare and ghosting, and color balance correction, enhances the performance of the lens.
Design on the coating, the most important is the thickness. But the limitations of film thickness control by vacuum deposition of thin film forming method and effect that rose had become a cause. HD coating than its own thin-film forming apparatus and processes, membrane thickness manufacturing error in the traditional 1/3. Close to the theoretical values of the design on the coating film thickness control, and conventional low reflection ratio below 50%.
To operate manually when auto focus to more focused with quick shift focus system auto focus convenience on the focusing ring is generally fixed. Quick-shift focus system, so even when focus is not fixed, so fine-tuning is possible. Before releasing the shutter above all else, turning the focusing ring and looks very professional looking good!
HD Pentax-da Limited series, with the entire lineup. Natural, soft, and beautiful Bokeh lens diaphragm can be expressed taste adopted the entire lineup. Do not become an unnatural point light, illumination, and a beautiful Bokeh subject of moderation in taste.In addition, with streaked light Diaphragm Blades 7 by 9 to odd, narrowed her bothers, bleeding. High-quality materials and finish, the barrel is machined from aluminum alloy CAP and hood, of course. Whenever each eye combined with a functional design expresses the essence of the lens condensed unique metal material luxury, cosy feel and weight, to take the uplifting feeling. All on digging elaborate colored paint. This is the finished print is difficult to peel, withstand years of embezzlement.
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