Opinions about Norin Binocular (1 Viewer)

[rodrigator]

Hi friends. I need an opinion on this binocular. Has anyone seen it or had a chance to try it?
I have a chance to buy it for $ 33 and I don't want it to leak.
I cannot find data on the web.
Norin Observer 10x50 wa. All I know is that it's Fully Coated and bk7

 

[Highway Dog]

No I have not tried that binoculars. Bk-7 is a fine glass but it does not have a high refractive index to allow Total reflection angle in the Porro prisms in the shoulders of the binoculars. When you look at the eye pieces you will see a bright square, with a slight, less bright boarder. If your eyes are centered you will not notice this much. In this cheaper binoculars it has glass anti reflection coating. Fully Coated usually means it is single coated. It will probably have a blue coating of magnesium fluoride. This was one of the first anti-reflection coating that did a good job.
helpfully,
Rob A.

 

[rodrigator]

No I have not tried that binoculars. Bk-7 is a fine glass but it does not have a high refractive index to allow Total reflection angle in the Porro prisms in the shoulders of the binoculars. When you look at the eye pieces you will see a bright square, with a slight, less bright boarder. If your eyes are centered you will not notice this much. In this cheaper binoculars it has glass anti reflection coating. Fully Coated usually means it is single coated. It will probably have a blue coating of magnesium fluoride. This was one of the first anti-reflection coating that did a good job.
helpfully,
Rob A.

Thanks for answering!
I finally bought it.
I was very satisfied. It is a second hand binocular but this one is really new.
It is bk7 but it has a beautiful multiple coating and the image is quite beautiful.
I am happy.