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

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  1. V

    New Zeiss Victory SF !!!!!!

    Might be an intentional optical design choice by Zeiss. Shorter wave lengths of light (blue/purple) tend to bounce around more on dust particles and water vapor in the air, filtering out some of the blue light will increase contrast. Skylight/Haze filters are sometimes used in photography for...
  2. V

    New Zeiss Victory SF !!!!!!

    CJ: Allbinos figures are not consistent over time. Those figures on the SV and SF I don't find realistic. Transmission values above 93-94% for a SP prism bin indicate some kind of happy meter syndrom.
  3. V

    New Zeiss Victory SF !!!!!!

    Fall-off in transmission between 500/450nm and 550/500nm: NV: 6% (2.1%) SV: 3% (1%) SF: 5.2% (2.9%) HT: 4.6% (1.4%) UVHD+:5.8% (1.5%) FL: 6% (4%) All bins are within 3% difference, with HT and SF closer than I thought. Maybe Zeiss put some kind of HT-ultra glass (there are several types*) in...
  4. V

    New Zeiss Victory SF !!!!!!

    SF is clearly a specialized birdie bin so perhaps Zeiss didn't think that HT glass was needed. But I'm also a bit annoyed that they didn't put all bells and whistles in the top of the line model. If Zeiss add HT-glass in SF MK III I guess we will understand how things work... Perhaps you...
  5. V

    New Zeiss Victory SF !!!!!!

    In theory yes, HT glass will give a 2-3% increase in the blue spectrum, but it seems that many people can't see much difference between the new UV-plus and the old UV. Maybe Zeiss thought it wouldn't be worth the extra cost or they saved HT glass for a future SF update. Especially as both Leica...
  6. V

    New Zeiss Victory SF !!!!!!

    ok, seems like a better method to weigh...;) thought "caps" were both ocular and objektive ones, and I actually got the impression that the new model were slightly lighter when trying them, shaving of 38 grams is not bad,
  7. V

    New Zeiss Victory SF !!!!!!

    thanks, seems like then "weight change" of the EL SV is only in the tech specs then,
  8. V

    New Zeiss Victory SF !!!!!!

    the 10x50 HD got very high score at allbinos, also transmission was very good, and would be even better in the HD Plus models, http://www.allbinos.com/194-binoculars_review-Leica_Ultravid_10x50_HD.html
  9. V

    New Zeiss Victory SF !!!!!!

    thanks Kimmo, any thoughts on reviewing the 8x and 10x SF:s?
  10. V

    New Zeiss Victory SF !!!!!!

    me? moi? noooo... actually it's not a division, but mixing feets and yards sure does seem quirky to me also... easy to stumble, either way, if you put your feet in a nest of rattle snakes, ;) here's something for you Dobler-fans... :t: https://www.youtube.com/watch?v=nsVp96AjpvY
  11. V

    New Zeiss Victory SF !!!!!!

    did you get the FOV OCD here on the forum? perhaps Brocks swaro focuser hang-up mutated in some poultry and did a fly-by in your neighborhood? ;) I told you I compared the SF with my 7x42 FL:s @ 150m FOV/1000m, and FOV it's practically the same to me in the SF, but more usable, And Troubs...
  12. V

    New Zeiss Victory SF !!!!!!

    do you use glasses? "effective" FOV also is an interesting parameter, I can't see the whole FOV in a bin like the EII, with my glasses on..same with my 7x42 FL:s, lack of ER I guess, but also the size of the EP is a part of it, big AFOV tend to need big diameter ocular lenses, to be usable, or...
  13. V

    New Zeiss Victory SF !!!!!!

    the SF:s are definitely candidates, for a lifetime binocular, the ergonomics are very clever, feels very natural to hold and operate the focuser, it's a VERY strong point in my book, But I think it's also a gut feeling in buying binos, they must feel right, and it's not always possible to...
  14. V

    New Zeiss Victory SF !!!!!!

    sorry to hear about your rolling ball problem, the edges of the SF is not SV-sharp, But if they are RB-free, I don't really know, I'm not a "panner", I'm more of a gazer.. so I'm not that sensitive to RB, I think, anyway, a bit sharper edges than my 7x42 FL would be nice to have, it's a bit...
  15. V

    New Zeiss Victory SF !!!!!!

    we don't know the actual magnification either, it could be 7.7x or 8.3x, I guess a bit lower mag is more likely, so the formulas might be a bit off for that reason, I hope you get to try the SF:s, very nice bins, but the Swaro SV:s are too, I haven't made my actual choice yet, still pondering...
  16. V

    New Zeiss Victory SF !!!!!!

    I don't do feet or yards....they are just confusing to me...:eek!: check out the zeiss brochure on the link below, the correct values are in there: the 8x42 SF is 444 ft at 1000 yards...
  17. V

    New Zeiss Victory SF !!!!!!

    sounds like binocular poetry, to me, "porthole-binoculars hitting you in the face", who would like to have one of those? I would use that in marketing if I was Zeiss, :-O
  18. V

    New Zeiss Victory SF !!!!!!

    I don't doubt the FOV figures, the 8x seems as wide as my 7x42 FL that is 150m@1000m, and it's easier to see the whole field in the SF, due to the larger EP and a bit more ER, as far as the AFOV, it's probably as Henry says, it will be a bit less due to the field characteristics (flatter...
  19. V

    New Zeiss Victory SF !!!!!!

    SF 8x42 - 444' (@1000 yards) - 148 meters (@1000m) - 8.6° - (64° AFOV) SF 10x42 - 366' (@1000 yards) - 120 meters (@1000m) - 6.9° - (65° AFOV) The formula AFOV = FOV x Magnification I suspect is an approximation that works best for narrow field telescopes. Probably why it differs with the real...
  20. V

    New Zeiss Victory SF !!!!!!

    Did you try the Zeiss SF yet, or are you just speculating your eyes out of their sockets trying to imagine how the unimaginable and clearly best birding binos in the world can be better than your old fabulous swifts? o:D
  21. V

    New Zeiss Victory SF !!!!!!

    I came to the same conclusion, always been put off by 10x42 bins before, (ER, FOV etc) but the SF is a game changer, it feels more like a 8x or 8.5x when using it,
  22. V

    New Zeiss Victory SF !!!!!!

    seems that if you are 60+, an 8x32 would be sufficient…even in twilight, o:) http://www.televue.com/engine/TV3b_page.asp?id=54&Tab=_Choose#.Vchf_kvWev8
  23. V

    New Zeiss Victory SF !!!!!!

    why don't you READ what Kimmo says: "My very tentative opinion at present is that the SF optical design is very good and certainly capable of producing extremely sharp images, but I cannot say anything yet about wether the production tolerances are high enough to provide this level in a sizable...
  24. V

    New Zeiss Victory SF !!!!!!

    I wouldn't say scientific but better quality than this thread… And I was also able to reproduce the results… But note that the HT54 is very sensitive to eye placement and correct IPD, B (:
  25. V

    New Zeiss Victory SF !!!!!!

    Results that can't be reproduced elsewhere by others, have no significance in the scientific world. No matter what the poster's name is or not. Until some VALID proof is presented on any type of "unsharpness", I would rest my case…
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