photo:contax500mmf4.5
Table of Contents
Carl Zeiss Contax 500mm f/4.5 Mirotar T* mirror lens
see also:
introduction
- this super telephoto lens is a catadioptric mirror lens, and as with all such mirror lenses, share the following characteristics:
- manual focus
- fixed aperture (in this case f/4.5)
- virtual elimination of chromatic aberration as uses mirror rather than lenses
- also means focus position for infrared photography is the same as for light photography
- central mirror:
- allows much more compact lens length as the optic path is reflected internally twice
- by necessity, blocks some of the light and thus causes:
- decrease in image contrast
- characteristic “doughnut” shaped bokeh imagery in out of focus areas
specs
- 500mm focal length and field of view (5°)
- fixed f/4.5 aperture
- 5 groups, 5 elements (including mirror), T* multicoating
- closest focus 3.5m
- 151mm slip on cap
- 3 position turret for ND filters
- rear drop in filters
- 151mm diameter, 225mm long and 4.5g
reviews
photo/contax500mmf4.5.txt · Last modified: 2014/05/18 02:26 by gary1