The PENTAX XF12 is ideal for outdoor viewing and bird watching. This high-performance unifocal eyepiece offers a focal length of 12mm, provides bright, high-contrast images, and features an extendible eyepiece ring with four click-stop positions.
Lens Structure: 6 elements, 4 groups
Real Field of View: 1.8 degrees
Apparent Field of View: 60 degrees
Field of View at 1000m: 31m
Field of View at 1000 Yards: 93 ft.
Exit Pupil: 2.0mm
Eye Relief: 18mm
Field Stop Diameter: 12.8mm
Relative Brightness: 4.0
Height & Width: 3.1\" x 1.7\"
Weight: 5.5 oz. (155g)
|Name||Pentax - XF-12 Eyepiece - DISCONTINUED|
|Eyepiece Apparent FOV||60|
|Eyepiece Barrel Size||1.25"|
|Eyepiece Eye Relief||18|
|Eyepiece Field Stop||12.8|
|Eyepiece Focal Length||12.0|
|Field Stop Diameter||12.8mm|
|Field of View - Apparent||60 degrees|
|Field of View - Real||1.8 degrees|
|Linear Field of View (@1000 m)||31m|
|Linear Field of View (@1000 yds)||93 ft.|