Recent Post

Monday, August 15, 2011

Canon EF-S 18-200mm f/3.5-5.6 IS Lens

 
Discription
 
Image quality:
Image quality is based on tests of sharpness (modulation transfer function), geometric distortion, reflexes within the lens (flare), veiling glare index, vignetting, and macro performance.

Modulation transfer function:
This is a measure of lens performance and shows how well a lens reproduces object detail in the image it produces.

Geometric distortion:
All lenses have degrees of geometric distortion, which will depict straight lines as slightly curved. Two most common types are barrel distortion and pin-cushion distortion. These types of distortions are often seen in zoom lenses at both ends of the zoom range.














Filter size 72mm
Format APS-C
Construction 16 elements in 12 groups
Angle-of-view 74° 20' - 7° 50'
35mm equivalent focal length (on APS-C body) 28.8 - 320mm
Internal focusing Yes
Image stabilisation Yes
Minimum focus 45cm
Maximum aperture f/3.5 - 5.6
Minimum aperture f/22 - 38
Weight 595g
Size (lxw) 78.6 x 102mm
In the box Lens caps

No comments:

Post a Comment