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

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  1. P

    Eyepieces for MM3 GA (non ED)

    Hi all, I've found myself in possession of (which, reading back over it, makes me sound as though I'm a bailiff...) an Opticron MM3 GA (non-ED), body only. I don't use a scope very much but can see how a small lightweight unit could be useful - I've already thought of a couple of jobs for it...
    • Patudo
    • Thread
    • eyepieces mm3 opticron
    • Replies: 3
    • Forum: Opticron
  2. P

    Docter (ex-Zeiss) Classic porros

    Curious to know if anyone's ever tried these (the Dekarem and other "classic" porros produced after the reunification of Germany). Are they meaningfully improved over the DDR made versions?
    • Patudo
    • Thread
    • docter jena porro
    • Replies: 21
    • Forum: Zeiss
  3. P

    8x42 FL comparisons

    Thought this might interest some folks. My brother normally uses an 8.5x42 Swarovski Fieldpro, but sent it off for re-armouring thanks to the notorious deteriorating armour issue and has spent the last two weeks using my 8x42 FL (black) in Singapore - mostly general birding but also some...
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    The ideal IS bino design?

    Posting this here because Canon is the main IS bino manufacturer and probably the most likely to introduce new models... I've been wondering if you could design an IS binocular for birding, what format it would be, and what features would it have? I've tried the Canon 18x50 (briefly) and given...
  5. P

    Lanthanum glass in Leitz binoculars?

    Just happened to read a couple of articles discussing the use of lanthanum oxide in old Leica lenses (here and here, if anyone else is interested). As I understand it, these were, in effect, the ED glass of the day, enabling chromatic aberration to be reduced. It begs the question: did any of...
    • Patudo
    • Thread
    • glass lanthanum leitz
    • Replies: 4
    • Forum: Leica
  6. P

    Carolina Parakeet...

    Apologies for the somewhat mischievous post title. 😸 I was wondering whether any of the parakeet species currently living in a feral state in the former range of the Carolina parakeet will eventually fill (or partially fill) its ecological niche? Here in the south-east UK the rose-ringed...
  7. P

    How much time do you spend looking *for* binoculars?

    The "do you dream of binoculars" thread prompted me to wonder how much time us optic-nerds spend looking for (as opposed to through!) binoculars? It'd be interesting to know how much time certain BFers spend on ebay and like websites, or poking through pawnshops and car boot sales... Speaking...
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    Old Zeisses still in use today

    Hey all, Thought it would be really interesting to see photos of and comments relating to the old (or indeed any non current model) Zeisses that are still being used today - and since I started the thread I suppose it would be churlish not to contribute myself. Since the lockdown started...
  9. P

    Birds you could watch for hours and hours...

    Hi all, I wanted to ask how long most of you would typically observe an individual bird (assuming the bird lets you do so). Do you tend to observe till you have a solid ID, then move on looking for the next species? Are there particular species that are more interesting and that you could...
  10. P

    Predation on swifts/hirundines?

    Hi all, Just wondering how often you guys/girls have observed attempts, by any kind of raptor, anywhere in the world, to capture hirundines and swifts - and how often do you think this group of birds are captured? From what I can gather, swifts in particular, seem to appear quite regularly in...
  11. P

    Life expectancy of most rarities?

    I've been wondering how long do most UK rarities survive upon finding themselves in these islands? Obviously there will be major differences between taxa/species - you would expect say a Vega Gull to survive quite happily for years, whereas a Tanager spp. might not last more than a few days or...
  12. P

    Question for techs: extending focus beyond infinity

    Hi, A couple recent comments on Cloudynights: Could any kind person with technical experience enlighten me on how this is achieved and (more pertinently) how difficult it is? I have a Swift 7x35 (model 766) that I would like to focus just a little further beyond infinity - it is just about...
  13. P

    Rangemaster focus beyond infinity?

    Hi ... I would like to ask those who own the various Rangemaster iterations (willspd, Rathaus and anyone else out there) how far they will focus beyond infinity? My prescription is, I think, 4.5 to 5 which is just a little too far for the Swift 766 I have. Best regards patudo
  14. P

    Most difficult birding situation - optically

    Hey all, Apologies if this question has been asked already, but I'd like to ask what is the most difficult situation you regularly come up against in your day to day birding (or on a fairly regular basis) - glare from direct sun or reflected sunlight? Locating and picking out small/tiny...
  15. P

    Singapore, December 2017 (mostly urban birding)

    I spent the last three weeks of December last year working and visiting family in Singapore. I spent a lot of my youth there and was familiar with the most common everyday species, but never attempted to properly observe them (through binoculars and so on) back then. I was looking forward to...
  16. P

    Minolta 7x35 Standard MK - thoughts

    I was looking for a wide field binocular a couple months ago and this came up: 7x35 11 degree field of view Multi-coated Minolta have a decent reputation for their camera lenses so I picked it up to see what it would be like in the flesh. Some observations after using it several times...
  17. P

    Zeiss-ness: 60 hours with the Oberkochen 8x30

    Zeiss-ness [tz-ice'nsz]: the ineffable quality or property possessed by iconic products of the Zeiss optical company. I am indebted to James Holdsworth for coining this term (I have taken the liberty of suggesting a definition) in relation to his 8x30B Oberkochen. I've now had the pleasure of...
  18. P

    Background clutter/difficult background

    Hi all - I would be grateful for your thoughts on the best binoculars you have found for picking birds from against difficult backgrounds. A couple of examples that have challenged me: - Stooping peregrine crosses from blue sky to below the horizon (urban/suburban area). Immediately lost...
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