Thursday, April 7, 2011

Canon EF 100mm f/2.8 USM L IS

Canon EF 100mm f/2.8 USM L IS macro is the 6th macro lens in the Canon EF lens lineup. Canon EF 100mm f/2.8 USM L IS does not replace the highly popular EF 100mm f/2.8 USM Macro but can be regarded as a supplement to the existing EF 100mm F2.8 USM Macro, and at a significantly higher price. Alongside the latest and greatest IS technology it gains all the usual benefits associated with the premium 'L' badge, including robust, weather-sealed build and the use of exotic glass for the correction of aberrations.
The optical construction is of 15 elements in 12 groups, including a single ultra-low dispersion glass element, and the 1:1 maximum magnification is achieved at a minimum focus distance of 0.3m. Canon EF 100mm f/2.8 USM L IS autofocus (AF) system is based on the usual ultrasonic motor (USM) which is both very fast and virtually silent. Nonetheless Canon provides a three step focus limiter in order to avoid AF hunting throughout the range which can be a problem when using AF in macro situations. Canon EF 100mm f/2.8 USM L IS feature a new "hybrid" IS which does not only compensate "conventional" shake but also linear movements. Canon claims an efficiency of 2 f-stops at 1:1 magnification and 4 f-stops at standard focus distances.
Canon EF 100mm f/2.8 USM L IS Specification

































MTF Chart















For detail review please see this following page DPreview.com or Photozone.de


Source : DPreview.com and Photozone.de




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