steve. the pair i am getting are a roof prism design.here is some info from a camera shop. i cant get the picture to tranfer.
Distinguished by olive green rubber armor, this sturdy binocular offers a comfortable non-slip grip and high eyepoint eyepieces. Each eyepiece focuses separately from the other. Although created for use on safari, this reliable model has been a hit in all corners.
Specifications:
Magnification 8
Objective diameter 30mm
Field of view at 1000 m 120m
Infinite adjustment range to 7m
Focusing range +/-6dpt
Twilight performance 15,49
Exit pupil 3,75mm
Relative geometric brightness 14,06
Interpupillary distance from - to 56,5-75mm
Length (eyecup elongated) 141mm
Width (PD 65) 114mm
Weight 600g
Last edited by 338rcm; 11/28/08.