Pentax Eyepiece SMC Waterproof Zoom 8mm-24mm 1.25 Tube 70509

Pentax Eyepiece SMC Waterproof Zoom 8mm-24mm 1.25 Tube 70509. Specifications for Pentax 20x-60x Zoom Eyepiece 70509 Magnification: 20x-60x Lens Structure: 6 elements 4 groups Real Field of View: 1.9 Degrees - 1 Degree Apparent Field of View: 38 Degrees...

Optics Planet