In a previous post I told you about the chromatic aberation that I see in my Noctivid 8X42 when I watch a dark bird in the sky.In fact the chromatic aberation appears when the subject comes out of the axis of my observation.So I have to follow the subject precisely if I do not want to see this yellow fringe appear.Worse than in other Leica 8X bins. Has anyone encountered this type of problem with the Noctivid? I don't think it is flare. Thanks.
Apuapu,
I have no problem with CA.
Do you wear spectacles while viewing? I've often wondered what role they play in CA.
Rathaus
Ratty
Specs can play a big part in the occurance of CA simply because the eyepieces don't have a snug eye-socket to fit into and so can easily land on your specs' lenses off-axis, or skid off-axis during use and this can trigger CA. Bins are designed to viewed-through on-axis and not skewed.
Lee
Correct eye positioning is important to minimize CA. Have you set up the correct IPD? If you wiggle the bins off-axis any bin will produce CA, but some might produce at bit more. Actually it might be a good way to get a grip on possible CA in a bin.
The reports I have seen (and when trying them) notes that Noctivid might have a bit more visible CA, at the edges, than for example Zeiss SF.
Centrally there should be no intrusive CA.
If there is, it might suggest that something is wrong with your bins.
Allbinos estimates CA in their reviews, and I have found that their results correlates pretty good to what I find in bins.
http://www.allbinos.com/allbinos_ranking-binoculars_ranking-8x42.html
Hello everyone. Today, I could watch hundreds of black kites in my coutry in migration (going to Africa). The sky was cloudy. It was impossible to follow them without seeing the CA in my noctivid 8X42. The AC is much better controlled in my trinovid 8 X 50 BN!
Off topic: That would have been something to see Arran! You're really fortunate to be able to watch goshawks like that - they're pretty secretive in the UK. I understand Brussels and other Belgian cities also have quite a few pairs of urban peregrines?
Vespobuteo,
In fact the chromatic aberation appears when the subject comes out of the axis of my observation.So I have to follow the subject precisely if I do not want to see the yellow fringe appear. I think my Noctivid are well adjusted. I know for the 50. I've owned Leica 10 X 50 Trinovid ans Ultravid. But now I am 52 years old and I need more deep of field. That's why I bought the 8 X 42!
Hello every body. Last month,I was talking about my yellow fringe problem on my Leica Noctivid 8 X 42 (lateral CA). I have send an email to Leica France. Here is the answer of a technical manager: " It is not necessary to return your product to SAV, this fringe is the result of an optical formula without concession.
Indeed, if we corrected this fringe then it would have had a significant negative impact on the general rendering (balance between light transmission, contrast and neutrality of colors)". I am not convinced...
I've been enjoying this binocular immensely.
I have a couple of very small gripes...so small they could be considered inconsequential.
The first concerns the 18 chunky ribs on the focus knob. A focuser this sensitive and precise, IMO, calls for not only thinner ribs, but perhaps double the number of ribs (the equivalent SV has about 36). During very sensitive focusing, negotiating these ribs with a finger can sometimes feel like negotiating smooth speed bumps on a very smooth road. Unnessary in this binocular.
Rathaus