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

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    RSPB ASW 8x40 eye relief question

    The description of the RSPB ASW 8x40 porro binoculars says, "the twist down eyecups mean spectacle wearers can also use these binoculars." But the specified eye relief is only 13 mm (shorter than the commonly recommended minimum of 14-16 mm). Are there any spectacle wearers out there who have...
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    Can you identify these binoculars from Jethro Tull’s Stormwatch / “Dun Ringill”?

    A diversion for the binocular nuts (or anyone else with time on their hands)… Aficionados of fine music will be familiar with the 1979 Jethro Tull album Stormwatch and its cover artwork showing Ian Anderson holding a pair of armoured binoculars: Some might also have seen the video for the...
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    Mystery bird print/artwork (late 1800s)

    I found this old print/artwork in my grandparents' archives. The text at the bottom reads, "Eidographie, Bourgerie-Villette, r, Fontaine-au-Roi, 56, Paris." I believe "Eidographie" is the type of print, and "Bourgerie-Villette" is the name of the printer (in Paris). It probably dates to the late...
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    seeking advice on Opticron Traveller BGA 8x24 compact/pocket

    I'm curious about Opticron's new Traveller BGA 8x24 compact pocket roof prism binocular ($329 USD). Initially I was looking to replace my cheap 8x21 pocket Bushnells, but at $329 I wonder how the Traveller's quality might compare to my Nikon Ecobins 10x25 reverse porro compact (~$120) in terms...
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    Question about my new (old) B&L Custom 10x40 (Audubon)

    I inherited a really nice Bausch & Lomb Custom 10x40 (armored porro, model no. 61-1046, with Nat'l Audubon Society endorsement badge). I'm curious about the year of manufacture. A couple of other posts on these forums provide approximate years (mid-to-late 1980s), but judging from other online...
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    Slightly dark disk in each eye - pupil or glass artifact?

    In my older (1983) 7.5x42 binoculars I have noticed an odd phenomenon: a disk shape that is almost the size of the image field but slightly darker. (See my re-creation in the attached illustration.) The disk is visible in any level of brightness (whether pointing at the sky or an interior wall)...
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    Questions about my green rubber armored Bushnell 8x30 (circa 1981)

    For nearly 40 years I've owned a pair of green rubber armored Bushnell 8x30 Compact Wide Angle (446 ft. at 1000 yds.) binoculars. The original box and owner’s manual are long gone, so I've never really known exactly what I have. Several years ago I asked Bushnell for information and received a...
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    Zeiss replacement strap color - green or brown?

    I’m looking to replace a lost strap for my 1981 Bushnell armored binoculars (army green color, and the strap was a thin army green plastic strap). Original replacement straps are no longer available, so I’m looking at 3rd party options that might be close. B&H photo store has this strap: ZEISS...
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    questions about Swift Osprey Mark II 7.5 x 42

    I recently inherited a nice pair of Swift Osprey Mark II 7.5 x 42 binoculars and I have a few questions: What's the difference between the Mark II and the original Osprey? What was the original retail price of the Mark II (either in the USA or UK)? The diopter ring is somewhat loose and turns...
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    Nikon 80-400mm vs Fieldscope ED (DSLR)

    Nikon 80-400mm vs Fieldscope ED (DSLR digiscoping) I currently use a Nikon D300 + 80-400mm zoom lens for bird photography and am considering purchasing a Nikon Fieldscope ED + the DSLR adapter (FSA-L1) for digiscoping with the D300. For a stationary, well-lit bird at 30 meters, will the...
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