Contax Zeiss 100mm f/2 Planar T* vs f/3.5 Sonnar T*
Both are Contax/Yashica telephoto lenses for full frame. Here is what actually differs.
Pick the f/2 Planar T* if
- You need 1⅔ stops more light for low light or background blur (f/2 vs f/3.5)
Pick the f/3.5 Sonnar T* if
- You want the lighter lens to carry: 385 g lighter (285 g vs 670 g)
- You want a compact lens: 61 mm vs 84 mm long
Spec differences
6 differences| f/2 Planar T* | f/3.5 Sonnar T* | |
|---|---|---|
| Max aperture |
f/2
1⅔ stops faster
|
f/3.5
|
| Weight |
670 g
|
285 g
lighter
|
| Length |
84 mm
|
61 mm
shorter
|
| Diameter |
70 mm
|
61 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
- Telephoto both
- Format
- Full frame both
- Focal length
- 100mm both
- Min focus distance
- 1 m both
- Autofocus motor
- Manual focus both
- Image stabilization
- No both