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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Recent content by ronh

  1. R

    Trinovid hd 8x32 report

    Thanks again folks for the kind words, and especially Nivado for sharing you experiences with this model. 42za, I did briefly try a 10x32 at the San Francisco Leica store. While its feel and view quality were very good, I was bothered by the issues naturally accompanying such a small exit...
  2. R

    Trinovid hd 8x32 report

    Thanks for your compliments guys. Troubador's report already said most of it, and I am in agreement with that, just adding some personals and details for your amusement. With another day's usage under my belt now, I'll especially elaborate on his comment about the focusing action. Fast knob...
  3. R

    Trinovid hd 8x32 report

    On a recent little stay in San Francisco, I found the big red spot store directly across the street from our hotel. I have long craved a nice roof prism 8x32, and planted that seed in my wife's mind to grow. I had decided the Ultravid HD plus was probably the one for me. But in the store, I...
    • ronh
    • Thread
    • Replies: 34
    • Forum: Leica
  4. R

    Comparing Zeiss and Swarovski 32 /30 models

    Henry, The 10x32 FL has less eye relief than the 8x32, so it probably doesn't have the 8x eyepiece plus a negative lens. In using Barlow lenses, which work by the same principle you refer to but increase a telescope eyepieces's magnification by considerably more than 10/8, I never noticed...
  5. R

    Review of Canon 10x32 IS

    Henry, It is good to see you back on the warpath. It is a pleasure to read your objective and well explained test results. The combined presence of large lateral chromatic error and extreme air spacing supports the cause and effect relationship between the two. I think testing the earlier...
  6. R

    Leica and chromatic aberration

    Adhoc, In a situation like that I would certainly have noticed lateral CA in a Leica. Any normal birder should have been irritated, but I would have probably thought "lateral CA, cool". Tringa45, Thanks for straightening me out on the Kowa Genesis objectives. I guess crystal would be wasted...
  7. R

    Leica and chromatic aberration

    "What compromise/s will Leica have to make if their optical design remedies this CA?" Leica beat the drum over their supposed introduction of fluoride glass in the objectives of the Ultravid HD, yet an improvement in lateral CA was not visible to the great majority of users reporting to this...
  8. R

    CA On The Noctivid

    Henry's finding of excessive SA in the HT was confined to the 54mm models. He tested the 42mm and found it up to snuff. Henry has also, some few years back, photographed various versions of field geometry presentation, including the kinds that often lead to the perception of rolling ball and...
  9. R

    Possible source of veiling glare?

    At age 67, I can just see the beginning cloudiness of a cataract in one eye when reading a well lit printed page. My sensitivity to internal eye light scattering in situations like described above seems no worse however than when younger. Eye scattering is noticeable in the same kind of...
  10. R

    Zeiss 8x56 FL

    Jack, It looks like no 8x56 users are going to respond. Unfortunately I am not one either, so cannot comment on the allegedly superlative view. But as a 10x56 FL owner, I can at least tell you that for me it is too heavy and big to be enjoyable for birding. FWIW also, despite the FL's high...
  11. R

    Eclipse

    I was clouded out in Perry, Florida as a college sophomore in 1970 I think. This second attempt was the charm. We had a nice clear totality view in Kearny, Nebraska. Simple filtered glasses were the ticket for the partial phases. The binocular filters we had purchased were announced "not ISO...
  12. R

    Leica Trinovid BA question ?

    BA/BN armor is not rubber, according to the old Leica ads, but polyurethane. Having owned a few, I'd say that compared to the alleged rubber on other binoculars I've owned, it is harder and tougher. It also utterly lacks the unpleasant odor of my supposedly rubber clad Ultravid BR. I don't...
  13. R

    John Dracon RIP

    John was keen, experienced and insightful, one of our best. Thanks for the news of his death. I'll miss him. Ron
  14. R

    leica 8x42 bn 2007 model

    Stingaz85, My first great roof prism binocular was an 8x42 BA, the model prior to the BN. I wish I had it back. My current #1 is a 12x50 BN. The BN has better coatings and thus a brighter image than the BA, and also will focus on closer objects. The new binocular that could be bought with...
  15. R

    Leica 8x32 BA

    Binastro, Just some random comments from a Leica fan and stargazer. In my small town suburb, rather than staging a frontal visual assault near streetlights, what worked for me was hanging opaque shrouds to shield myself from direct view of them. This caused a great relaxation in my...
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