Lens Models
Lens models are any interchangeable lens that has been marketed
Mamiya Sekor 250mm f/4.5
 Summary |
|
|---|---|
| Manufacturer | Mamiya 
|
| Model | Sekor 250mm f/4.5 |
| Mount | Mamiya RB67 |
| Marketed | 1970-1974 55 years ago |
 Optics |
|
| Zoom |  |
| Focal length | 250mm |
| Aperture | f/4.5-45.0 |
| Closest focus | 2.00m |
| Elements/Groups | 5/4 |
| Diagonal angle of view | 20° |
| Negative size | 6×7 |
| Coating | Single coated |
| Optical diagram |
|
 Features |
|
| Autofocus | |
| Shutter model | Seiko |
 Physical |
|
| Weight | 1510g |
| Filter thread | 77.0mm |
 Misc |
|
| Link | https://rb67.helluin.org/lenses/250mm-f4-5/ |
 Meta |
|
| Sharing |
|
Actions
CameraHub v0.0.0