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

Recent content by elkcub

  1. elkcub

    Which Audubon porro to look out for...?

    Ribbon, I'm confused as well. Please search for "Swift Audubon Binoculars" on eBay. Auction #256331299097 is Swift Binoculars #804 Audubon 8.5 X 44 Made In Japan Extra Wide Field Excellent selling for $172.00. Somehow the auction number I posted in #3 was wrong. Anyway, the s/n shows it...
  2. elkcub

    Which Audubon porro to look out for...?

    ?? Oh, no. My recommendation on Post #3 remains in force. So sorry to push you past your bedtime. Ed
  3. elkcub

    Which Audubon porro to look out for...?

    Hello Pat, If you are looking at Auction 285588162976, then I will have to respectfully disagree. The gold stripe model is a Swift Pyser issue from 1982 and is not multi-coated. The one I recommended is the from the late 1990s and is fully multi-coated. It also costs less. Frankly, if I were...
  4. elkcub

    Which Audubon porro to look out for...?

    Hi, Looking on line I came across this eBay auction: 285588162976, which originates in England and should ship easily to your country. This is the Fully Multi-Coated (FMC) version of the HR/5. Assuming it's properly collimated, it looks to be a bargain, so you might want to go for it before...
  5. elkcub

    Lee Thickett (Troubador) - R.I.P.

    How very sad. My condolences to Troubidoris and his family. He will live on in our memories. Ed
  6. elkcub

    Checking Collimation

    What kind of spot, and on what? :unsure: Okay, "spot on" is the absence of an eyestrain/pulling sensation. So, it's not something that is, but something that isn't. I like it. :giggle: Ed
  7. elkcub

    An example of terribly ignorant advicer

    If a stupid article is written by an AI agent, can we still say it's "intelligent?" :unsure: Ed
  8. elkcub

    Why is buying and collecting binoculars so addictive.

    I was once addicted to high-end roof binoculars that did not use field flatteners and had 18mm+ eye relief. Ed
  9. elkcub

    The Habicht 10x40 ...

    If memory serves then Habicht's do not have field flatteners but SE’s do. If that is currently the case then even without looking I‘d expect the two types to produce fundamentally different spatial perceptions. Personally, I’m allergic to flat fields. Ed
  10. elkcub

    Binoculars - recommendations, please

    I'd suggest that you consider the Pentax-Papilio II 6.5x21, which retails on Amazon for under $100 USD. Very good optics, light weight, and amazing focusing range. Ed
  11. elkcub

    Troubador

    Baaa, Baaa ... etc.
  12. elkcub

    Troubador

    Good to see you back, Lee. Best wishes, Ed
  13. elkcub

    Are transmission graphs relevant for you when selecting binoculars? How?

    Please provide the full set of viewgraphs as shown below for the presentation he made on Chromatic Aberration the year before in Whistler, BC. Thanks, Ed
  14. elkcub

    Are transmission graphs relevant for you when selecting binoculars? How?

    I'm familiar with Larry Thiobos' work. However, you still need to provide a journal article, book, or grant/contract report. Thanks, Ed
  15. elkcub

    How much variation is there in the production line.

    Yes, you did miss something. :giggle: I said: "Measurable objective correlates of perceived color differences." In other words, these quantities (three are needed for color) correspond to, or correlate with, what a typical person (aka, an "ideal observer") would see. If computed from the...
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