For the last few weeks I've used the Docter Nobilem 10x50 (aka Brontosaurus, The Dumbell, Dr No) almost exclusively. You can never have too much time with a binocular, but 2 to 4 hour stints glued to the binoculars (virtually all my targets are beyond the naked eye), in conditions ranging from pure-white cloud illuminated by bright midday sun to dull grey overcast and late afternoon (@10 minutes before official sunset) light, and on birds from about 30m away to dot size, makes for a reasonably good trial... I think anyway.
I commented on this binocular a month or so ago (
link) and still agree with most of what I liked and disliked about it. Optically I think it's very good indeed. The combination of comfortable exit pupil, wide field of view and the immersivity of using them straight to the eyes with the rubber eyecups shielding stray light seem to make for great viewability. Sharpness seems as good or better than the Nikon 10x42 SE and viewing comfort better, which I suppose is to be expected from a larger binocular with more aperture, and sweet spot is generous too. This thing combines much of the best of the 12x50B Nobilem Spezial and the 10x50 Zeiss West with more modern coatings/colour rendition than either - although today's best, and probably second-best, are (unsurprisingly) better yet. It'd be interesting to know if there was any improvement between the model I have and its final iteration with the more contemporary armouring.
So it's great in terms of viewability, and very good mechanically too, all moving parts seeming tight and precise (although, as noted in my earlier post, I'd have preferred a stiffer and slower focuser). But as far as usability is concerned, it's almost the opposite. If you free-hand it you'll find yourself wishing for somewhere to brace your elbows pretty quickly - 1.3 kg may not sound like much, but if you have to point the binoculars almost directly upward to stay on a bird that insists on circling high overhead, that weight really makes itself felt. I don't find Zeiss's marketing slogan for the SFL ("
Feel the intensity. Not your equipment") quite so funny any more. Any smaller binocular seems like a joy to use afterwards!
...which begs the question - is the weight worth the hassle? Does what the brontosaurus offer make up for it being such a PITA? I can say with confidence that the 10x50 format really works well for my kind of birding, offering a great combo of long reach, reasonable steadiness and good viewing comfort (very important when scanning for distant targets for hours, and hopefully following them for long periods). I think the last factor is so important that it makes me willing to put up with a large and unwieldy device a lot of the time. I sure wish it could be packaged into something the size of the Zeiss West 10x50 though, or ideally smaller yet. I guess I ought to go look at the Maven or SFL 10x50s now, shouldn't I?
