Carl Zeiss Biogon T* 21mm f2.8
Designed by Dr. Ludwig Bertele, the Biogon lens formulation exerts a powerful hold on the hearts of photographic fans around the world. Especially for use with the CONTAX G series, the T* 21mm f2.8 was perfected by Carl Zeiss using the latest in optical technology. Although the Biogon T* 21mm has an ultra-wide angle of view of 90 degreess, distortion is very low. High contrast is achieved even with the f stop wide open.
The Biogon T* 21mm lens combines rich gradation, clear, three-dimensional reproduction along with high colour saturation. This lens responds well to a wide variety of photographic applications from astistic expression to architectural photography.
The Biogon T* 21mm f2.8 lens uses a supplied optical viewfinder with a cross-hair reticle to provide an accurate ultra-wide angle view.
Specifications | ||
Lens Composition |
9 elements in 7 groups |
|
Focal length |
21.5 mm | |
Image Size |
24 x 36mm | |
Angular Field |
90° | |
Mount |
CONTAX G Mount | |
Aperture |
Pre-set | |
F stop scale |
f3.5-5.6-8-11-16-22 | |
Minimum Focus |
0.5m | |
Filter connection |
55mm (screw in) | |
Size |
59 x 35.5mm (2-3/8x1-7/16in.) | |
Weight |
180g (6.35 oz) | |
Accessories |
Viewfinder GF-21mm, Lens cap 55mm GK-51 (snap-type), Lens rear cap GK-R2, Biogon case |