Sony's SEL55210 55-210mm f/4.5-6.3 Lens offers a long telephoto zoom lens with 3.8x magnification. The equivalent of 82-315mm in full-frame or 35mm format, this lens has a versatile short-to-long telephoto range. Its Internal focusing feature gives you smooth, responsive autofocus, with minimum noise - perfect for capturing video. With a telephoto lens, image stabilization is very important to prevent camera shake. Optical SteadyShot gives you the ability to capture sharp, crisp images (still or video) even in low light or when zooming into distant subjects. Two ED (Extra-low Dispersion) glass elements help to suppress chromatic aberration color bleeding at all focal lengths, so you have excellent image quality throughout the zoom range. It creates a 28.2 - 7.8 degrees angle of view, a 3.28-feet minimum focusing distance, and accepts 49mm filters. This is a lens that you'll want to keep handy at all times for dramatic long-range images.

SteadyShot Image Processor

Sony's Alpha DSLR cameras are designed with the SteadyShot Image Stabilization inside the camera body itself. This means that the lenses that you attach to them don't require the added bulk of a IS system. The result is a lighter and more streamlined lenses that does not require the added weight of the mechanics.

Focusing

Sony's Internal Focusing feature allows you to focus a lens without changing its size. With IF Lenses all optical movement is restricted to the interior of the lens barrel, providing for a lighter, more efficient design. Faster focusing is produced by a lighter and compact focusing lens group.

Direct Manual Focus with non-rotating focus ring during AF: ideal for precise, comfortable manual focus adjustments

Extra Low Dispersion Glass (ED)

Sony's Low Dispersion technology is engineered to reduce chromatic aberrations, which becomes more of a problem as focal lengths get longer. By eliminating the tendency of light of different colors to focus to different points at the image plane. This means your images will come out crisp and clear, with less of a chance of defracting light into an unwanted rainbow of colors. Take shots exactly like you want, without any flare-up or blurring.

Aspherical Element

Sony's aspherical lens design creates a more complex surface profile, while also reducing lens size and weight. Specially shaped “aspherical” elements near the diaphragm restore alignment of light rays at the image plane, translating to high sharpness and contrast even at maximum aperture. Well-designed aspherical elements can reduce the total number of elements required in the lens, thus reducing overall size and weight. The design further ensures consistent imaging performance throughout the entire focal range, while delivering incredible sharpness up to the periphery of the image.

7-Blade Circular Aperture

The circular aperture of this lens creates pleasing natural Bokeh effects. While Conventional aperture blades have flat sides creating unappealing polygonal shaped defocused points of light. This lens overcomes this problem through a unique design that keeps the aperture almost perfectly circular from its wide-open setting to when it is closed by 2 stops.

Lens-based optical image stabilization

Gyro sensors built into the lens detect even the slightest movement, and the stabilization lens is precisely shifted to counteract any image blur that might occur. The use of precision, quiet linear motors and technology inherited from high-end Sony professional camcorders results in exceptionally quiet, effective image stabilization that contributes to high-quality movies as well as stills.