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

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  1. Andy Adcock

    Wengen Area, Switzerland June 2023

    Very little, hence my suggestion but I wouldn't usually try to ID most Fritillaries on upperwing alone, I think it's a female. I made the point that most Fritillaries are best done on underwing, for the benefit of Martin, in the event he photographs one again. The same applies to Blues.
  2. Andy Adcock

    Wengen Area, Switzerland June 2023

    Maybe Thor's Fritillary Clossiana thore but they are best done on underwing, any underwing shots?
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