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Equipped with Sigmas own unique OS (Optical Stabilizer) technology Four SLD elements and three Aspherical lenses provide high image quality throughout the entire zoom range Minimum focusing distance of 45cm/17.7 inches and a maximum magnification of 1:3.4 makes it ideal for close-up photography Super multi-layer coating reduces flare and ghosting For Pentax digital SLR camerasExtra Description
Style: Pentax SLR Mount The SIGMA 18-250mm F3.5-6.3 DC OS HSM incorporates Sigmas original anti-shake compensation functionc with a 13.8 times zoom ratio. For the camera have anti-shake function in the camera bodyc this lenss Hybrid Optical Stabilizer provide not only anti-shake function for the camera body compensationc but also provide the function to compensate the image shaking in the view finder of the camera like anti-shake compensation built in the lens. Incorporating four Special Low Dispersion glass elements and three Aspherical lens elements provides excellent image quality throughout the entire zoom range. This lens has a minimum focusing distance of 45cm (17.7 inches) at all focal lengths and a maximum magnification of 1: 3.4 reproduction ratioc making it ideal for close-up photography. An inner focusing system eliminates front lens rotationc making it suitable for use with circular polarizing filters and the supplied petal-type hood. Incorporating super multi layer coating reduce the ghost in the backlight photography.
Used with my D7100. Decent quality. Damn good for the price. Was tough to get on for the first time. Unlike Nikor lensesc this is metal on metal so you need to elbow grease it into the body the first few times to break it in. Thought I would break something. very decent for video. lens creep was not as bad as many others say but my left hand is almost always cradling it anyway. Againc terrific for the price. Only gripe is my Nikor lenses tend to lock on subject with autofocus a fraction faster so with this I need to be more precise. br brHere are a few photos I took with it.