Hello!
I am the very happy owner of one pair of 10x42 Victory FL and one pair of 7x42 Dialyt T*P*.
However, one day I decided to look down the tubes of my FL from the objective side. First I was shining a strong LED lamp in through the front lens, and it looked as nice and clean as one should expect. Then I took the lamp (the LED flash on a regular smartphone) and shone it in through the ocular while I was still looking down through the front lens of the same tube. Interestingly, this gave the possibility of observing more about how the prisms etc are attached to the body. Then, when playing a little with the angle of the light, I noticed how the surface of a prism showed a strange surface texture. It had a rough surface of the coating with a transition into a cloudy appearance. It created a kind of halo that seemed to originate from a blob of glue just between the edge of the prism and the wall of the tube. The same, but much smaller, could be seen in the other tube at the same location. In the first tube the rough textured/cloudy halo covered about 20% of the prism surface on that side.
I took my Dialyt and made the same check. It also shows a similar surface feature of the prisms in the same location, also seemingly originating from what appears to be a drop of glue. [It certainly looks like what one could expect around a drop of super-glue, which often tend to cause fumes when solidifying]
Has anyone else seen this in any binocular of similar construction (Abbe-Koenig)?
If so..
Does it have any effect on the fuction, or does the light pass the prism/get reflected through/on other surfaces? [I think the image through both my binoculars is perfectly clear, but everything is relative...]
Are the prisms in Zeiss A-K binoculars attached with glue?
I think there is maybe 10-15yrs between my Dialyt and the FL. I live in a very dry climate, and it does not look like fungy. It rather looks like fumes from glue, and some disruption of the prism coating most proximal to the potential glue drop.
Kind regards
orm
I am the very happy owner of one pair of 10x42 Victory FL and one pair of 7x42 Dialyt T*P*.
However, one day I decided to look down the tubes of my FL from the objective side. First I was shining a strong LED lamp in through the front lens, and it looked as nice and clean as one should expect. Then I took the lamp (the LED flash on a regular smartphone) and shone it in through the ocular while I was still looking down through the front lens of the same tube. Interestingly, this gave the possibility of observing more about how the prisms etc are attached to the body. Then, when playing a little with the angle of the light, I noticed how the surface of a prism showed a strange surface texture. It had a rough surface of the coating with a transition into a cloudy appearance. It created a kind of halo that seemed to originate from a blob of glue just between the edge of the prism and the wall of the tube. The same, but much smaller, could be seen in the other tube at the same location. In the first tube the rough textured/cloudy halo covered about 20% of the prism surface on that side.
I took my Dialyt and made the same check. It also shows a similar surface feature of the prisms in the same location, also seemingly originating from what appears to be a drop of glue. [It certainly looks like what one could expect around a drop of super-glue, which often tend to cause fumes when solidifying]
Has anyone else seen this in any binocular of similar construction (Abbe-Koenig)?
If so..
Does it have any effect on the fuction, or does the light pass the prism/get reflected through/on other surfaces? [I think the image through both my binoculars is perfectly clear, but everything is relative...]
Are the prisms in Zeiss A-K binoculars attached with glue?
I think there is maybe 10-15yrs between my Dialyt and the FL. I live in a very dry climate, and it does not look like fungy. It rather looks like fumes from glue, and some disruption of the prism coating most proximal to the potential glue drop.
Kind regards
orm