Gray, hazy ring in FOV

[Ken Swenson]

This is a question to the optics experts on the forum.

I’ve noticed with multiple examples of Swaro binos what seems to be a gray or hazy ring or halo roughly 80-90% towards the outside of the FOV. It becomes most noticeable when panning, but I notice it even when the binos are steady on a tripod.

Here’s an example of the “ring”



Is this standard with all binos, or a possible defect? I’ve seen it in both NL and EL binos from Swaro.

 

[roosiebull]

Are you talking about personally looking through binos and seeing it or in digiscope pics?

 

[Ken Swenson]

Are you talking about personally looking through binos and seeing it or in digiscope pics?

Both. Used the phone pic to capture it as close to reality as I could. It’s not as pronounced to my eye as in the picture, but it’s noticeable

 

[roosiebull]

Both. Used the phone pic to capture it as close to reality as I could. It’s not as pronounced to my eye as in the picture, but it’s noticeable

Maybe try different eye relief settings on your eye cups, that’s the only thing I can think of, I have never seen that and have been behind a lot of swaro binos

The NL especially are freakishly clear on the edges

 

[Hotmail]

Neither of my NL Pures have that. I'd be really PISSED if I saw that in such ridiculously expensive Binoculars.

 

[Ken Swenson]

I think it’s the eye relief. It only shows up when I screw the eye cups in all the way and get my eyes all the way into the glass.

 

[MattB]

It sounds like you have the eye cups set for using glasses and you are not using glasses. If that’s the case, it is not a problem with the products.

 

[SikaSeeker]

I see this using Zeiss Nautic 7 x50 (v nice collectors glass) and it’s usually due to sunny day and eyecups not being folded down.

 

[SikaSeeker]

If you can , it wouldn’t hurt to get a Swarovski dealer to look at them. Just to rule out any doubt.