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Ordered Leica Noctivid 8x42 - a mistake..? (1 Viewer)
- Thread starter The Kingfisher
- Start date
The Kingfisher
Well-known member
Se my attached pic below! That white thing in the picture is a thin metal wire..sticking out from the back of the focus wheel. I am thinking if it has something to do with the diopter?
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henry link
Well-known member
Flat spots along the exit pupil edge come from straight prism edges intruding into the clear aperture. It can happen if the prisms are undersized or if the eye's pupil is not centered well with the exit pupil or, in a binocular that uses eccentric eyepieces for collimation, if too much lateral eccentricity has been required to achieve good collimation between the left and right sides. That can result in poor internal collimation of one or both telescopes. A high magnification star test would easily reveal the resulting coma if that's the case.
If you look at the photo in Tobias' review that shows the Noctavid exit pupils stacked below an Ultravid you can see intruding prism edges in the left side at about 1:00-2:00 and about 10:00-1100. In that case the edges show because the camera lens is very far out of line with the exit pupil.
Henry
If you look at the photo in Tobias' review that shows the Noctavid exit pupils stacked below an Ultravid you can see intruding prism edges in the left side at about 1:00-2:00 and about 10:00-1100. In that case the edges show because the camera lens is very far out of line with the exit pupil.
Henry
The Kingfisher
Well-known member
Maybe..its very very thin and breakable. When I touched it with a toothpick the outer edge of the wire fell off.
The Kingfisher
Well-known member
The exit pupils on my sample have about the same shape as them in Tobias image (the left exit pupil in that image). Its very difficult to see round exit pupils on my sample, but maybe they are perfectly round after all. On my EDG it is very easy to see that the exit pupils are perfect!
The Kingfisher
Well-known member
End of story - I have now sent the Noctivid back to the dealer...
Mike F
Well-known member
For replacement with an explanation as to what was wrong with your example, or......?
The Kingfisher
Well-known member
No, not for a replacement - forever! It was too difficult with the eye placement for me. That was the number one reason I sent it back!
coolhand68
Well-known member
I recently sent mine back as well. I had trouble with eye relief and proper placement. Too much fiddling with finding the right position to place them to my eyes. I do not wear glasses when using binoculars.
Robert Moore
Well-known member
That’s bizarre to me about eye placement because I think the Noctivid is one of the easiest binoculars I have encountered to look through. Everyone is different that’s why we have a variety.
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