270mm f/6.3 ED Large-format T-series lens
Nikkor T 270mm f/6.3 ED
| Focal Length (mm) | 270 |
| Maximum aperture ratio | 1:6.3 |
| Minimum aperture | f/64 |
| Lens construction (elements/groups) | 5 / 4 |
| Covering power (Max. aperture) | 24° |
| Covering power (f/22) | 33° |
| Image circle (mm) (Max. aperture) | 114 |
| Image circle (mm) (f/22) | 160 (4 x 5) |
| Shutter (Copal® No.) | 1 |
| Shutter speed (sec.) | 1~1/400, T, B |
| Sync socket | X-contact |
| Front mount size (mm) | 70 |
| Attachment size (mm) | 67 x 0.75(P) |
| Rear mount size (mm) | 54 |
| Flange attachment size (mm) | 39 x 0.75(P) |
| Flange focal distance (mm) | 187.6 |
| Overall length (mm) | 98 |
| Weight (g) | 590 |
