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

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  1. has530

    Kowa 8x25 SV vs. BD Brief Comparison

    I doubt it. The extra 3mm of aperture gathers 30% more light and I doubt either of the 25mm options have transmission under 70% with full multi coatings and silvered prisms. However the 8x22 does have a far wider FOV and is more compact and seems like a very nice product. I’ve never tried one as...
  2. has530

    Kowa 8x25 SV vs. BD Brief Comparison

    My overall positive impressions of the SV series led me to make an impulse buy and I now also own the 10x25! In many of the "build quality" categories it is the same as the 8x25. Same slop in the focuser, same coatings (however the hinge tightness on this specimen is a little loose for me) but...
  3. has530

    Kowa 8x25 SV vs. BD Brief Comparison

    There is a slight softening in the outer 20% but nothing dramatic and I still feel like it would be no problem making an ID using that portion of the field. It is worth noting that at only 6.3 degrees it isn't the widest field so good edge performance should be achieved. The brightness is not...
  4. has530

    Kowa 8x25 SV vs. BD Brief Comparison

    I had the opportunity today to try Kowa's budget and middle class compacts side by side in the field and figured I may was well write down my observations here for anyone trying to decide between the two (or who may be otherwise interested). In general I like both very much for their price and...
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