Sunday, January 04, 2009

Canon EF-S 18-200 mm F3.5-5.6 Lens

Price : $699

Canon EF-S 18-200 mm F3.5-5.6 Lens review :

With its 11x zoom range, the 18-200mm becomes Canon's most ambitious consumer-level zoom to date; the company has previously shied away from producing relatively inexpensive superzooms, with its only previous foray into this sector being the 28-200mm F3.5-5.6 (USM) for 35mm SLRs from late 2000. And while it's this older lens that the 18-200mm most strongly resembles, Canon has managed to squeeze plenty more into the design in the intervening eight years. The zoom ratio has been stretched to a 35mm-equivalent range of 29-320mm, and the new lens incorporates Canon's latest compact image stabilization unit (as seen on the EF-S 18-55mm F3.5-5.6 IS and the EF-S 55-250mm F4.5-5.6 IS), which offers automatic panning detection and (according to the company) four stops of stabilization. All this has been achieved using a suitably complex optical design of 16 elements in 12 groups, including two UD glass elements and two aspherical elements which are designed to minimize chromatic aberration and ensure crisp corner-to-corner detail across the zoom range. Rounding off the specification is a minimum focus distance of 45cm/1.5ft at all focal lengths.

Canon EF-S 18-200 mm F3.5-5.6 Lens specifications :

Maximum format size :APS-C
Focal length :8-200mm
35mm equivalent focal length(APS-C) :29-320mm
Diagonal Angle of view (APS-C) :74º - 8º
Maximum aperture :F3.5-5.6
Minimum aperture :F22-36

Lens Construction
• 16 elements/12 groups
• 2 UD elements
• 2 Aspherical elements

Number of diaphragm blades :6, rounded
Minimum focus :0.45m/1.5ft
Maximum magnification :0.24x at 200mm
AF motor type :Micro motor
Focus method :Internal

Image stabilization
• 4 stops
• Automatic panning detection

Filter thread
• 72mm
• Does not rotate on focus

Supplied accessories
• Front and rear caps

Optional accessories
• EW-78D Hood
• Case

Weight :600 g (21.2 oz)
Dimensions :79 mm diameter x 102 mm length (3.1 x 4.0 in)
Lens Mount :Canon EF-S only
Other :Supplies distance information for E-TTL II flash metering

Source : [dpreview]

No comments:

Post a Comment