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

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  1. R

    Have scopes nowadays Porro or Roof prisms?

    Thank you and it shows that we are never too old to learn. Richard
  2. R

    Have scopes nowadays Porro or Roof prisms?

    I have not heard an objective being called "slow". Pls what does that mean? Richard
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