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Sigma 18-200mm f/3.5-6.3 DC


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.


No 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.


Not stabilized

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.


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.


No drop-in filter support

Drop-in filters are used in those lenses where either the front lens is too large, or the field of view doesn't permit the use of traditional filters at the front of the lens. Usually bright tele and ultra-wide angle lenses support this filter type.

This high zoom ratio lens is exclusively designed for digital SLR cameras and capable of covering a wide range of focal lengths from wide-angle to telephoto. Two Special Low Dispersion (SLD) glass elements and two hybrid aspherical lenses offer the utmost correction for all types of aberrations, and enables this extended range super zoom lens to be housed in a compact and lightweight construction of 70mm (2.8 inches) diameter, and 78.1mm (3.1 inches) in length, and weighing just 405g/14.3oz. The new lens coating reduces flare and ghost, which is a common problem of digital cameras and also creates an optimum color balance. This lens has a minimum focusing distance of 45cm (17.7inches) at all focal lengths and has maximum magnification of 1:4.4.

Sigma 18-200mm f/3.5-6.3 DC Specification

Available mount(s) Canon EF, Nikon F, Pentax K, Sony / Minolta A, Sigma
Application(s) Portrait, Landscape, Wildlife, Architecture
Category(s) Standard zoom, Tele zoom
Multiplier 1.5×
Stabilizer no
Focal length 18 - 200 mm (11.1× zoom)
Lens construction 15 elements in 13 groups
Angle of view 35mm: N/A
digital: 76.5-8.1°
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 45 cm
Magnification 0.23×
Filter size 62 mm
Size ∅ 70 × 78.1 mm
Weight 405 g
Notes At December 19, 2007, the Sigma announced a new version with built-in AF motor allowing autofocus with all Nikon APS-C DSLR cameras. The size of this model: 70 ?- 75,6 mm, and the weight is 395 g.
AF speed 0.8 sec. (from close up to infinity)
AF sound
Internal focusing yes
Internal zoom N/A
Fix front lens yes
Mount type metal
Weather sealed N/A
Drop in filter no
Ultrasonic AF no
Stepping motor AF no
APS-C sized circle yes
Low dispersion lens element yes
Hard case N/A
Soft case N/A
Lens hood LH680-01
printable lens hood
Tripod adapter N/A
Discontinued yes
Sigma 18-200mm f/3.5-6.3 DC Specification

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