Comparison
Carl Zeiss Jena Pancolar 50mm f/1.8 vs KMZ Jupiter-8 50mm f/2
The Carl Zeiss Jena Pancolar 50mm f/1.8 is a 50mm f/1.8 M42 lens made 1965-1980, valued at $70 to $260 used. The KMZ Jupiter-8 50mm f/2 is a 50mm f/2 M39 (Leica screw) lens made 1950s-1980s, valued at $30 to $120 used.
Specifications side by side
| Specification | Carl Zeiss Jena Pancolar 50mm f/1.8 | KMZ Jupiter-8 50mm f/2 |
|---|---|---|
| Focal length | 50 mm | 50 mm |
| Maximum aperture | f/1.8 | f/2 |
| Native mount | M42 | M39 (Leica screw) |
| Production years | 1965-1980 | 1950s-1980s |
| Optical design | 6 elements / 5 groups, Double Gauss | 6 elements / 3 groups, Sonnar |
| Typical used value | $130 | $60 |
| Value range | $70 to $260 | $30 to $120 |
| Adapts to | Sony E, Fuji X, MFT, Canon RF, Nikon Z, L-mount | Sony E, Fuji X, MFT, Canon RF, Nikon Z, L-mount |
What actually differs
- The Carl Zeiss Jena Pancolar 50mm f/1.8 is 0.3 stops faster: f/1.8 against f/2.
- The KMZ Jupiter-8 50mm f/2 is cheaper. Typical used value is $60 against $130, a gap of $70 (roughly 2.2x). Ranges: $30 to $120 versus $70 to $260.
- Both are 50mm lenses, so framing is identical on the same sensor.
- The KMZ Jupiter-8 50mm f/2 is the older design; production began around 1950 against 1965 for the Carl Zeiss Jena Pancolar 50mm f/1.8 (1950s-1980s versus 1965-1980).
- They use different mounts, M42 and M39 (Leica screw), so each needs its own adapter. Both reach infinity on mirrorless bodies with a plain mechanical adapter.
- Construction differs: 6 elements in 5 groups for the Carl Zeiss Jena Pancolar 50mm f/1.8, 6 elements in 3 groups for the KMZ Jupiter-8 50mm f/2.
Which one to buy
Choose the Carl Zeiss Jena Pancolar 50mm f/1.8 for the 0.3 stops of extra speed. Choose the KMZ Jupiter-8 50mm f/2 for the $70 lower typical price. Rendering differs too: read the character notes below, because speed and price are the only advantages the catalog data can settle.
Minimum focus distance, weight, and measured sharpness are not in the catalog, so this comparison does not claim anything about them.