Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM Lens. This compact 18-250mm F3.5-6.3 'Macro' 13.8x super-zoom lens for APS-C DSLRs is an ultra compact walkabout versatile zoom lens, incorporating Sigma's newly developed Thermally Stable Composite (TSC). The HSM (Hyper Sonic Motor) ensures fast and quiet auto-focusing. This lens has a minimum focusing distance of 35cm and a maximum magnification ratio of 1:2.9, making it convenient for close-up photography. SLD (Special Low Dispersion) and aspherical lenses provide excellent correction for all types of aberrations. High image quality is assured throughout the entire zoom range. The Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM Lens has filter size of 62mm
Sigma redesigned the optical and structural design of this lens in order to achieve a relatively compact size, as well as a close minimum focusing distance of 35.05 cm for close up photography. Their Thermally Stable Composite (TSC) construction maintains the structure of the lens, with little variation despite changing temperatures. The lens also incorporates a brass-made bayonet mount, to further reinforce the lenses durability and resistance to wear and tear over time.
The minimum focusing distance is the same throughout the focal length of the entire zoom range, and provides a maximum magnification ratio of 1:2.9. As an added benefit over fixed focal length macro lenses, the size and framing of subjects can quickly and easily be adjusted by rotating the zoom ring. For even further convenience, at each focusing distance on the side of the lens barrel, the maximum magnification ratio is also displayed.
The 18-250mm F3.5-6.3 DC Macro OS HSM has been built with Sigma's exclusive Optical Stabiliser (OS) function. This provides approximately 4-stops of effective camera correction, allowing for lower-light shooting, or greater sharpness in adequate lighting situations. This benefit is even carried into the macro range of photography, where the slightest bump or blur could easily ruin an image. This stabilizer is also adaptive to moving subjects, detecting your movement as you pan the camera and lens, offering effective correction there as well.
For high image quality, you know you've got to have high quality glass, and Sigma has incorporated their Special Low Dispersion (SLD) glass element into the 18-250mm. In addition to the SLD element, three aspherical lenses, including a double-sided aspherical lens, have been used in the lens' construction--offering excellent correction of colour aberration, for better clarity and quality of images throughout the zoom range.
A Super Multi-Layer Coating has also been employed to reduce flare and ghosting with this lens. This makes it resistant to strong incident light, such as backlight behind a subject, providing sharper, high contrast images even shooting into a light source. To prevent internal reflections from occurring, the included petal-type lens hood can be attached in order to block out extraneous light.
For a lens that offers a wide-angle to telephoto focal length, the ability to zoom-in with macro photography, and provides Optical Stabilization built-in, Sigma's 18-250mm F3.5-6.3 DC Macro OS HSM made for Nikon cameras is more than a match. Whether you're on a macro product shoot, a walk in the park, or have a wedding to go to, this lens will help you shoot high quality images in any situation.
Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM Lens in Canon EF mount, lens hood, lens cap, rear lens cap, instruction manual, 3 Year Sigma Warranty
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