Designed for use with Pentax spotting scopes and with astronomical telescopes with appropriate 31.7 mm focusers. It has weatherproof construction for greater durability. The smc Pentax 3.5 mm features high-grade Lanthanum glass with high refraction and low dispersion. In addition, original multi-coating and special coating on the laminated surfaces effectively reduce flare and ghosting, achieving extremely high lighttransmission performance.
Compatible with the Pentax PF-100ED, PF-80EDA, PF-80ED, PF-65EDAII and PF-65EDII spotting scopes.
Figures in parentheses are the distance from the viewing rubber
|Apparent Angle of View||70°|
|Weatherproof||JIS class 4 equivalent
|Diameter & Length (minimum)||137 x 61mm|
|Weight (+/- 5%)||4055g|
|Accessories||Eyepiece lens cap,
Objective lens cap