Contax Zeiss 85mm f/1.4 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/1.4 Planar T* if
- You need 2 stops more light for low light or background blur (f/1.4 vs f/2.8)
Pick the f/2.8 Sonnar T* if
- You want the lighter lens to carry: 340 g lighter (255 g vs 595 g)
- You want a compact lens: 47 mm vs 64 mm long
Spec differences
6 differences| f/1.4 Planar T* | f/2.8 Sonnar T* | |
|---|---|---|
| Max aperture |
f/1.4
2 stops faster
|
f/2.8
|
| Weight |
595 g
|
255 g
lighter
|
| Length |
64 mm
|
47 mm
shorter
|
| Diameter |
70 mm
|
62.5 mm
slimmer
|
| Filter thread |
67 mm
|
55 mm
|
| Optical design |
6 elements / 5 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