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

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  1. B

    Review of the Linet Imperial 7x35 WA 13.5 degree Porro Prism

    Too much of a generalization IMHO. There are differences between binos that seem to have the same type of coating and still one is almost perfectly color neutral and another one has a noticable tint. I have one of the skeleton super wides, the 6x24 with 11.5° FoV (and I am sure that number is...
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    Review of the Linet Imperial 7x35 WA 13.5 degree Porro Prism

    Just a little thought, since I use these things a lot. Just came back from hiking and had one of my 8x30 EWAs with me. The field curvature is less of a problem than the massive pincushion distortion. Unless you like to roll your eyes around in the FoV, the blurry edges are not much of an...
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    Review of the Linet Imperial 7x35 WA 13.5 degree Porro Prism

    I didn't hold back often enough with my critique of Dennis but I think it's a good thing to appreciate the porros of yesteryear. And considering how many I have by now - dust and fungus are rarely an issue, alignment is however. And even if they had some dust inside, they're easy enough to...
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    Review of the Linet Imperial 7x35 WA 13.5 degree Porro Prism

    I doubt it's 15 %. The good ones among the EWA porros have more like 60% sweetspot depending on ones ability to accommodate of course.
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    Review of the Linet Imperial 7x35 WA 13.5 degree Porro Prism

    @[email protected] Some are easier to work on than others. I like the German brand "Hartmann" for example. On those the prisms can be adjusted without even taking them apart. But most of the time they have hazy prisms, so I have to take them apart anyway. Still, the prism adjustment on these is...
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    Review of the Linet Imperial 7x35 WA 13.5 degree Porro Prism

    Definitely. However the FoV on which I can see a sharp field stop is around the same that a Nikon Action EX 7x35 has -- and that one has 9.3°. I have a Tasco #116 with supposedly 10.5° in which I can see the fieldstop and it's not fuzzy but it doesn't really seem wider than the Nikon. So on some...
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    Review of the Linet Imperial 7x35 WA 13.5 degree Porro Prism

    From the wide angles I have, my JB-22, 12°, 7x35 with BaK4 prisms is probably the best, even though it has severe field curvature. But I used it the other night for stargazing and it felt like a spacewalk. It's not one of those that are considered "the best" of the vintage EWAs. I do also like...
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    Review of the Linet Imperial 7x35 WA 13.5 degree Porro Prism

    @[email protected] Welcome to the EWA-enthusiast club! One of my favourite class of instruments. 7x35 and 8x30 EWAs.
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