Pier,
Many thanks for that report. It was particularly interesting to see the Docter's performance set in relation to the Kowa Highlander.
BTW, do you or other members of the Binomania team experience difficulties in using a bin with 2 mm exit pupils?
John
PS:- I don't accept your apologies for your English - they are completely unnecessary
HI John, nice to write you! As you know the comfort of using small pupils on binoculars is very subjective. I also observed with telescopes for many years and I often use such small exit pupils. In any case i and my staff we had no problems to use the Docter 40X and even the people who have tested its in recent weeks. In addition, I calculated an eye relief of about 17mm, I do not use glasses, but a friend of mine has told me that he had a small problem "approach" to this pair of binoculars which resolved after few minutes of observation. The other day I went to watch the grebes and I can confirm you that this binocular , in visual observation, gives a good color, a little warm, but is not visible in most cases, the chromatic aberration This is also noticeable, to admire the feathers of a pair of swans at long distance under the sun. I think that at this price is truly unbeatable. The real problem of the 40X version is the diurnal turbulence, because,, like you know, at 40X the atmospheric turbulence is amplified respect a classic 20-25X .For this reason, some people preferred the version (20-50X) that allowed them to lowers the magnification when they need. In any case, the high contrast of this instrument and its sharpness provide a great satisfaction and I love the great unbeatable AFOV of 84 ° which provide a total immersion in nature. Obviosly during my daily observation in the middle of the wood,I always carry with me Swarovision 8.5x42 (which I am now comparing vs the 8x42 SLC HD), but with the Docter at 40X you can see details invisible to the "small binoculars" The other day I recognized , at tens of meters, the type of fish that a grebe had caught, which is impossible with an 8-15X,obviously is not a portable binocular, but as you've seen on my blog, we have adapted a backpack to carry on the mountaiign, and a trained person can walk on trails for a couple of hours.
Before to use the Docter , for my long-distance, observation I could use only a spottingscopes, if I wanted to watch with two eyes i had to opt for an astronomical telescope with prism and binoviewer. But the weight was excessive and was not waterproof and a economic setup have not this type of eyepieces with 84° AFOV, so much sharpness, etc,etc.. The Docter costs such as the Leica Apo Televid but if you do not have transport problems, I prefer to look with both eyes.
Best Regards from Italy
