Sigma 18-250mm f/3.5-6.3 DC OS HSM

	APS-C sized image Lenses that create APS-C sized image are designed for digital only. They cannot be used on cameras that have image sensor larger than the APS-C format. These lenses are not suitable for film cameras either. Ultrasonic AF Lenses with ultrasonic focusing mechanism tend to be quiter and faster than traditionally focusing lenses. No stepping motor AF Lenses with stepping motor focusing mechanism are better for contrast based focusing, and are quiter and faster than traditionally focusing lenses. One or more Low Dispersion lens element is used Low Dispersion lens elements help to reduce chromatic aberration. Built-in image stabilizer Image stabilization helps to reduce blur caused by hand shake, especially at high focal length or in low light situations. Image stabilization can give 1 to 3 stop advantage over none stabilized lens, based on the reciprocal rule. Metal mount Cheaper lenses are usually equipped with plastic mount, while more expensive, professional lenses have metal mount. In general, metal mounts are more durable, and a good thing to have when lenses are changed a lot. When a camera is used mainly with one lens, the material of the lens mount is not that important. Internal Focusing Internally focusing lenses don't change their size while setting focus. No Internal Zoom Internally zooming lenses don't change their size while focal length is changing. The front lens is fixed The fixed front lens is not rotating during zoom and/or focusing. This allows the photographer to use petal shaped lens hood. Fixed front lenses also make the use of polarization filters a lot easier.
18-250mm F3.5-6.3 DC OS HSM incorporates Sigma's original anti-shake compensation function, with a 13.8 times zoom ratio. As opposed to having an anti-shake function in the camera body, this lens?EURTMs Hybrid Optical Stabilizer provides not only an anti-shake function for the camera body, but also compensates for image shaking in the view finder as the Optical Stabilizer is built in to 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 ratio, making it ideal for close-up photography. An inner focusing system eliminates front lens rotation, 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.

18-250mm F3.5-6.3 DC OS HSM incorporates Sigma's original anti-shake compensation function, with a 13.8 times zoom ratio. As opposed to having an anti-shake function in the camera body, this lens?EURTMs Hybrid Optical Stabilizer provides not only an anti-shake function for the camera body, but also compensates for image shaking in the view finder as the Optical Stabilizer is built in to 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 ratio, making it ideal for close-up photography. An inner focusing system eliminates front lens rotation, 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.

Datasheet
Reviews
Owner Reviews
Accessories
Sample Photos

Sigma 18-250mm f/3.5-6.3 DC OS HSM Specification

Sigma 18-250mm f/3.5-6.3 DC OS HSM Specification
Available mount(s)	Canon EF, Nikon F, Pentax K, Sony / Minolta A, Sigma
Application(s)	Portrait, Closeup, Landscape, Wildlife, Architecture
Category(s)	Standard zoom
Multiplier	15×
Stabilizer	yes
Focal length	18 - 250 mm (13.9× zoom)
Lens construction	18 elements in 14 groups
Angle of view	35mm: 69,3° digital: 5,7°
Number of blades	7
Maximum aperture	wide: f/3.5 tele: f/6.3
Minimum aperture	wide: f/22 tele: N/A
Minimum focusing distance	35 cm
Magnification	0.3×
Filter size	72 mm
Size	∅ 79 × 101 mm
Weight	630 g
Notes
AF speed	N/A
AF sound
Internal focusing	yes
Internal zoom	no
Fix front lens	yes
Mount type	metal
Weather sealed	N/A
Drop in filter	N/A
Ultrasonic AF	yes
Stepping motor AF	no
APS-C sized circle	yes
Low dispersion lens element	yes
Hard case	N/A
Soft case	included
Lens hood	included
Tripod adapter	N/A