sigma 18 200mm

THE DEFINITION OF ZOOM CREEP? zoom creep (verb); Definition written by dpreview excerpt reads as follows: Zoom creep is the tendency for a lens to extend under its own weight when pointed downwards (or collapse when pointed upwards), and is a fairly common characteristic of superzooms. It can be a problem when carrying the camera over your shoulder with the lens hanging downwards, as having the zoom continually extend to its maximum length is not just irritating, but also makes the lens more vu

The Eminence Sigma Pro 18A-2 is intended to be used as a woofer in vented enclosures for professional audio applications. Eminence Sigma Pro 18A-2 Features at a Glance:Nominal Basket Diameter: 18Nominal Impedance: 8 ohmsPower Rating: 650W (1300W, Music Program) Resonance: 28HzUsable Frequency Range: 41Hz-2.4 kHzSensitivity: 99dBMagnet Weight: 120 oz.Gap Height: 0.37Voice Coil Diameter: 3Get legendary Eminence quality with the Sigma Pro 18A-2 18 woofer!

This latest version of the Sigma Macro 150mm F2.8 EX DG HSM boasts Optical Stablization (OS) which is critical to equipment sporting this focal range and is now splash-proof. Offering the latest optical design technology this lens remains a large aperture medium macro lens ideal for shooting the smaller things in our world that exists virtually unseen. A macro lens is one which will focus on a subject close enough to render it life-size on the image plane in your camera. It also has a flat field front lens element so that it can shoot images of flat objects such as artwork or postage stamps and be tack sharp all the way across the image. With HSM (Hyper-Sonic Motor) a quiet & high-speed auto focus is ensured. It provides extremely high optical performance from infinity to 1:1 Macro... Less

By revolutionizing the optical and structural design of the Sigma 18-250mm F3.5-6.3 DC OS HSM, this lens achieves a compact size and a minimum focusing distance of 35cm. New material, Thermally Stable Composite (TSC) maintains its structure and has little contractility especially in varying temperatures, is incorporated into the lens barrel. It is convenient when you wish to keep your equipment to a minimum and yet still be prepared for all opportunities and situations, such as travels. A wide range of photography is possible in one lens Covering wide angle 18mm to telephoto 250mm, this versatile lens designed exclusively for digital SLR cameras, is suitable for all-purpose photography including landscape, sport, and macro photography. It is convenient when you wish to keep your... Less

By revolutionizing the optical and structural design of the Sigma 18-250mm F3.5-6.3 DC OS HSM, this lens achieves a compact size and a minimum focusing distance of 35cm. New material, Thermally Stable Composite (TSC) maintains its structure and has little contractility especially in varying temperatures, is incorporated into the lens barrel. It is convenient when you wish to keep your equipment to a minimum and yet still be prepared for all opportunities and situations, such as travels. A wide range of photography is possible in one lens Covering wide angle 18mm to telephoto 250mm, this versatile lens designed exclusively for digital SLR cameras, is suitable for all-purpose photography including landscape, sport, and macro photography. It is convenient when you wish to keep your... Less

Sigma 18-200mm f/3.5-6.3 II DC OS HSM Lens for Canon EOS Cameras, USA The Sigma 882-101 18-200mm F3.5-6.3 II DC OS HSM lens is ideal for travel photography with a compact construction and length of just 87.7mm.This lens features FLD (F Low Dispersion) g

Sigma Long Desk by New Spec A contemporary look in office furniture from New Spec, Inc., the sleek Sigma Computer Desk has a seamless desktop work surface, attached are convenient shelves and keyboard tray. These desk components are durable, lightweight and budget-friendly. This desk offers the perfect space to concentrate on work of any kind. Its' sleek, modern look is sure to enhance your office as well. Available in Beech with Dark Gray.Features: Steel Frame Wooden Top 2-Top Shelves

Sigma's New APO 70-200mm F2.8 EX DG OS HSM is the second generation of this large aperture telephoto zoom lens now incorporating Sigma's Optical Stablization function, OS, Sigma's own anti-shake system. Two FLD glass elements, which have the performance equal to fluorite glass have also been added along with three SLD glass elements, all which provide excellent correction of color aberration. In spite of the additions of all of these features, Sigma has managed to make the lens more compact than its predecessor, measuring only 7.8 in length. For any serious photographer where the 70-200mm focal range is often the most important second lens to own after the initialstandards lens or mid range zooms. The fast aperture is extremely useful and important in low light environments or when... Less