John goshawk
Well-known member
What is the prism arrangement for this scope.
Can a straight through scope like this use a roof prism?
Thanks John
Can a straight through scope like this use a roof prism?
Thanks John
Thanks that's brilliant.Not a wizard unfortunately but your answer should be in here - Have scopes nowadays Porro or Roof prisms?
I just about grasp this. Would need a diagram to truly get it. Thanks for your help. JohnPorro prisms are arranged at an angle of 90 degrees from each other, in most binoculars this forms an inverted "V" shape.
You can see it in the photo below in the way the prism housings go diagonally up then down with there top edges forming a 90 degree angle. View attachment 1545076So I suppose none of the prisms will be vertical in either layout and the offset will be the same in both configurations, just one will be vertically offset in relation to the tripod foot and one will be horizontally offset to it.
I can't see the inverted V in either diagram. Perhaps you could help me figure it out. Thanks JohnPorro prisms are arranged at an angle of 90 degrees from each other, in most binoculars this forms an inverted "V" shape.
You can see it in the photo below in the way the prism housings go diagonally up then down with there top edges forming a 90 degree angle. View attachment 1545076So I suppose none of the prisms will be vertical in either layout and the offset will be the same in both configurations, just one will be vertically offset in relation to the tripod foot and one will be horizontally offset to it.
Any theories concerning my last comment?Good to talk to people with logical minds!
I swear dodgy diagrams by leading manufacturers have cause no end of confusion!
Very grateful for your time.
With this in mind, any idea why kowa often favours an offset eyepiece/bulge to one side in their scopes? Larger prisms?