Pentax's 80mm & 100mm series of premium spotting scopes adhere to the American standard of 1.25" eyepiece thread diameter, facilitating the use of independently-manufactured telescope eyepieces.
All of the Pentax eyepieces exhibit an apparent field of view of greater than 50°, which is the generally agreed-upon maximum viewing field that an observer has in their non-peripheral vision. You'll feel like you are surrounded in space with a distortion-free portal to distant scenes at your disposal.
| Magnification |
74x with 80mm scopes 90x with 100mm scopes |
| Angle of View |
0.8° with 80mm scopes 0.7° with 100mm scopes |
| Field-of-View (@ 1000 Yds) |
45' (15 m at 1000 m) with 80mm scopes 36' (12 m at 1000 m) with 100mm scopes |
| Exit Pupil Diameter |
1.1mm with 80mm scopes 1.1mm with 100mm scopes |
| Eye Relief | 20mm |
| Relative Brightness |
1.2 with 80mm scopes 1.2 with 100mm scopes |
| Twilight Factor |
76.9 with 80mm scopes 94.9 with 100mm scopes |
| Weatherproofing | Waterproof & fogproof |
| Dimensions | 4.4 x 2.4" (113 x 60mm) |
| Weight | 0.94 lb (425 g) |