henry link
Well-known member
Brock,
The main source of veiling glare in the 8x30 is the objective cell. The prism shelf opening is another less important source. Exterior hoods are not much help at most the incident angles of reflection that cause the glare. The objective cell glare could be easily eliminated with a single interior baffle of the correct size placed near the back of the objective. When I complained about it to Swarovski in 1986 thy said they would look into the problem.
It's been so long since I owned the 10x40 that I can't remember what I thought about its veiling glare. Even if it has the same objective cell problem it's possible that it inadvertently benefits from having a slightly lower focal ratio compared to the 8x30. Since the prism shelf aperture is the same in both models the edge of the lower focal ratio 10x40 objective cell would be seen from the eyepiece as a little more "around the corner" from the edge of the prism aperture, which would allow the prism aperture to more effectively block whatever reflections it has.
Henry
The main source of veiling glare in the 8x30 is the objective cell. The prism shelf opening is another less important source. Exterior hoods are not much help at most the incident angles of reflection that cause the glare. The objective cell glare could be easily eliminated with a single interior baffle of the correct size placed near the back of the objective. When I complained about it to Swarovski in 1986 thy said they would look into the problem.
It's been so long since I owned the 10x40 that I can't remember what I thought about its veiling glare. Even if it has the same objective cell problem it's possible that it inadvertently benefits from having a slightly lower focal ratio compared to the 8x30. Since the prism shelf aperture is the same in both models the edge of the lower focal ratio 10x40 objective cell would be seen from the eyepiece as a little more "around the corner" from the edge of the prism aperture, which would allow the prism aperture to more effectively block whatever reflections it has.
Henry