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Where premium quality meets exceptional value. ZEISS Conquest HDX.

Recent content by edz

  1. E

    IS opinions

    I don't see this mentioned very often, but it is fairly well known now. The Canon 10x42 does not get to use all of the 42mm aperture. A baffle attached to the front end of the movable internal lens (or something other) causes vignette of the light cone. When that lens is moved all the way...
    • edz
    • Post #22
    • Forum: Canon
  2. E

    COLOR BIAS, Que es?

    A few quotes from a world reknowned optician ( Zeiss coats each glass according to it's own unique index value. It requires constant monitoring by skilled technicians, as well as adjusting the formula. Some (evaporant) produce a so-so coating, other, more expensive materials produce a very high...
  3. E

    ZR 8x43 ed2 vs Nikon 8x32SE:a rough comparison

    I have not. However, you can read all the actual measures on the 10x42SE in either of my Reviews in the Reports section of Cloudy Nights. Small Binocular Reports The 10x50s Small Binocular Reports Three Families FWIW, the 10x42SE has almost exactly the same wide usable fov as the 8x43ED2 and...
  4. E

    ZR 8x43 ed2 vs Nikon 8x32SE:a rough comparison

    some additional measures compared between these two binocularss Aperture 8x32SE measures 32mm, Zen 8x43ED2 measures 41mm Fov, 8x32SE measures 7.6°, Zen 8x43ED2 measures 7.7° Sharp FOV 8x32SE measures to 95% of fov or 7.2°, Zen 8x43ED2 measures to 70% of fov or 5.4°, not at all close. this...
  5. E

    Ultravid & ED Glass; Help me understand.

    The Takahashi Astronomer 22x60, one of the finest binoculars I've ever looked thru, does indeed use Fluorite, and it is the outside element. edz
    • edz
    • Post #10
    • Forum: Leica
  6. E

    Revalations and the ZR binocular

    Very interesting comments by the original poster. Also some very interesting responses, some of which veer off the main point. FWIW, I agree with the original poster that reviews, or even comments regarding a product that do not constitute a review, must remain as unbiased as conceivably...
  7. E

    Should I get a spotting scope when I already have a 10X70 Fujinon

    You only need an 83mm refractor to give you the same brightness as seen with binocular vision thru your 10x70s. sq rt of 70x70x1.4 = 83 edz
  8. E

    10x and 12x SE's, holdability differs much?

    I've found the Nikon SE 10x42 among the very best of my handheld binoculars. Hnadheld resolution ranked amoung the top ten. Quite an assortment of some of my heaviest and some of my lightest binoculars are in that group of top ten best for hand-held resolution. Although the Nikon SE 12x50 did...
  9. E

    10x42 or 10x50 Porro?

    The WRM, although it has the a narrow 53° Afov, has the least aberration in the outer fov, so has the widest usable field of view of these three you mention. It also has the longest eye relief and weighs the least. However, if I'm not mistaken, it is not fully multi-coated throughout. But...
  10. E

    my first resolution measurement

    Setting scaling to "none" does the job for correct size.. I'm printing to an HP laserjet 4350. image quality consistent down to group 0 element 4 or 5. quality OK down to group 1 element 3. between those lines and spaces are inconsistent in width. edz
  11. E

    my first resolution measurement

    Printing the chart on a printer and having it look acceptable is not the only thing you need to be concerned about. The lines have to be precisely sized to use the standard formulas provided with the chart. To use the standard formulas, in Ron's 8.5x11 chart above, it is extremely important...
  12. E

    How to measure dilated pupil diameter?

    I can't answer that definitively, as I've never made any note of that. I suspect, if you take your hypothetical example to the extremes as you have, and you consider resolution so poor as to spread the light out over 10x the area, preception of point image brightness would probably decrease...
  13. E

    How to measure dilated pupil diameter?

    Well, not really. It just shows that your cascade can't beat out the SE 8x32. Limiting magnitude tests of a dozen different binoculars from 8x32 to 8x42, under typical mag 5.2-5.6 skies, ranges from mag 9.1 to mag 9.6. However, 5 out of 12 different 8x40/42s that I've tested could do no...
  14. E

    How to check field of view ?

    No it cannot. Close focusing changes both the power and the extent of the fovv in binoculars. For a typical 8x40 or 10x50, you might see only 80% to 90% of the field of view when focused at 20 feet. It grows wider as you look further away. When focused at close distance, some binoculars fov...
  15. E

    Nikon SE 8x32 vs. Zeiss Victory FL 7x42 T* ???

    Well Henry, I had my epihany. And I apologize for belaboring the point about where you start focus to use your method. It doesn't matter. I must have had my dumb hat on, as I said it myself, the only error that can be focused out is curvature. If all you want to do is measure how far the...
    • edz
    • Post #97
    • Forum: Zeiss
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