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

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  1. H

    Is the 8x32 Victory SF really worth almost 2.5x the cost of the 8x32 Conquest HD?

    It seems that no matter how settled this matter is there will always be new folks coming along who aren't yet unacquainted with how DOF works in Keplerian telescopes like binoculars and will have observations that convince them they are right. This has been explained many times here in the last...
  2. H

    Is the 8x32 Victory SF really worth almost 2.5x the cost of the 8x32 Conquest HD?

    I'd like to suggest a modification to Upland's method for comparing depth of field between binoculars that removes some variables and narrows down the explanations for what's being seen to only two possibilities. First, make an artificial star like a pinhole over a flashlight lens or a small...
  3. H

    Is the 8x32 Victory SF really worth almost 2.5x the cost of the 8x32 Conquest HD?

    I compared them here: Encounters with Zeiss 8x42 HT and SF
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