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Contax Zeiss 85mm f/1.2 Planar T* vs f/2.8 Sonnar T*

Both are Contax/Yashica prime lenses for full frame. Here is what actually differs.

Pick the f/1.2 Planar T* if

  • You need 2½ stops more light for low light or background blur (f/1.2 vs f/2.8)

Pick the f/2.8 Sonnar T* if

  • You want the lighter lens to carry: 619 g lighter (255 g vs 874 g)
  • You want a compact lens: 47 mm vs 72.5 mm long

Spec differences

6 differences
Specifications that differ between the Contax Zeiss 85mm f/1.2 Planar T* and the Contax Zeiss 85mm f/2.8 Sonnar T*
f/1.2 Planar T* f/2.8 Sonnar T*
Max aperture
f/1.2 2½ stops faster
f/2.8
Weight
874 g
255 g lighter
Length
72.5 mm
47 mm shorter
Diameter
80 mm
62.5 mm slimmer
Filter thread
77 mm
55 mm
Optical design
8 elements / 7 groups
5 elements / 4 groups
8 identical specs hidden: brand, mount, type, format, focal length, min focus distance, autofocus motor, image stabilization. Show all
Brand
Contax both
Mount
Contax/Yashica both
Type
Prime both
Format
Full frame both
Focal length
85mm both
Min focus distance
1 m both
Autofocus motor
Manual focus both
Image stabilization
No both

More comparisons

Contax Zeiss 85mm f/1.2 Planar T* vs f/1.4 Planar T*

½ stop faster vs 279 g lighter

Contax Zeiss 85mm f/1.4 Planar T* vs f/2.8 Sonnar T*

2 stops faster vs 340 g lighter

Compare other lenses or browse our best-of guides.