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

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  1. E

    Leupold Gold Ring HD 8x32 versus SV 8x32

    Amen to that. Could the moderator please keep that recommendation as a sticky for this forum?
  2. E

    Leupold Gold Ring HD 8x32 versus SV 8x32

    Your basic understanding is quite correct. Of course, there are technicalities even here, getting the deposition to be uniform and making sure the layers stick properly to each other, but the process is well in hand. The 'lambda' is the wavelength of the light getting specified, in this case...
  3. E

    Leupold Gold Ring HD 8x32 versus SV 8x32

    As Jan points out, Schott or Hoya glass by itself means nothing. Glass is a mixture of materials, it comes in infinite variety. There are multiple individual offerings from each manufacturer, with their important parameters, such as refractive index or transparency at specific frequencies very...
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