Za:
http://www.the-digital-picture.com/Reviews/Canon-EF-800mm-f-5.6-L-IS-USM-Lens-Review.aspxModel Dimensions w/o Hood Weight MFD MM
Canon EF 200mm f/2 L IS USM Lens 5.0 x 8.2" (128 x 208mm) 5.6 lbs. (2,520g) 6.2' (1.9m) .12x
Canon EF 300mm f/2.8 L IS USM Lens 5.0 x 9.9" (128 x 252mm) 5.6 lbs. (2,550g) 8.2' (2.5m) .13x
Canon EF 400mm f/2.8 L IS USM Lens 6.4 x 13.7" (163 x 349mm) 11.8 lbs. (5,370g) 9.8' (3.0m) .15x
Canon EF 400mm f/4 DO IS USM Lens 5.0 x 9.2" (128 x 233mm) 4.3 lbs. (1,940g) 11.5' (3.5m) .12x
Canon EF 500mm f/4 L IS USM Lens 5.8 x 15.2" (146 x 387mm) 8.5 lbs. (3,870g) 14.8' (4.5m) .12x
Canon EF 600mm f/4 L IS USM Lens 6.6 x 18.0" (168 x 456mm) 11.8 lbs. (
5,360g) 18.0' (5.5m) .12x
Canon EF 800mm f/5.6 L IS USM Lens 6.4 x 18.1" (162 x 461mm) 9.9 lbs. (
4,500g) 19.7' (6.0m) .14x
Despite Canon doing their best to keep the weight down (including the use of magnesium alloy in the construction), large size and heavy weight are simply part of the physics of an 800mm f/5.6 lens. It weighs less than the Canon EF 600mm f/4 L IS USM.
A poza tym kichu napisal reszte.