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On a week long birding break earlier in January I didn’t see anyone using a harness on bird reserves/hot spots around the north coast of Norfolk [...]
I wonder how much of the perceived preferences you have observed are due to geographical location.
I was going to point out a similar idea. I usually go birding on my own, and frankly I rarely see people with binoculars. When I'm birding with the local Natural Park/Rangers/Birders/etc. it's 100 % neck strap.
On the only 2 day "group birding trip" I've done in my life, I must say that, out of 20 people, I did see 2 using a harness.
As for myself, I've tried using harnesses, regular (like thick straps) and Rick Young. The latter is nice. However, I simply find it's too much fuss, and then, I usually bring my backpack with me, and I find it interferes with the way the RY works. In addition to this, I find the RY works better with several layers of clothing, and where I live the weather is quite mild, so many times you're on a single layer. The result is quite clear: I stopped using the RY harness and I honestly don't know where I put it, since I don't miss it. Again, that's just me and my experience
So, what I do:
- When I'm "actively" birding, it's 100 % neck strap. Not necessarily the original/stock, since sometimes they're poor, or there are others I prefer. For example, I'm a big fan of the Pre-FP Swarovski strap that allows for quick and simple way of shortening/lengthen it and also is dead easy to attach/detach, because it uses a button/clip stile, unlike the fussy traditional method where you have to fiddle with the strap and loop it through a buckle. In fact, the "button system" this Swarovski strap uses is nothing new, it's an old system I've seen in porros from yesteryear and also the classic devices like the Swarovski Habicht (see picture) and the Leica Trinovid BA. I have two Swarovski straps, but I normally use more than 2 binoculars regularly, so I find myself changing strap quite often, and every time I do it, I find it so convenient and quick (and every time I have to do/undo a "normal" loop/buckle strap I think why on earth is not a common feature).
- When I'm walking to/from a birding spot, or not actively birding, then I wear the binoculars in two different ways.
1. If it's a compact 8x32, I wear the case on my belt, which I find utterly comfortable and understated. I use the Nikon Monarch 7 8x30 case for anything from an Opticron Traveller 8x30, which is quite compact, to a not that small Swaro EL 8x32, or even 7x42 models, like a Leica Ultravid, or even porros like Nikon EII 8x30 or Kowa YF 8x30, in this case, the binoculars are on their side.
2. If it's a bigger model, like a x42 or the IS 12x36 that I use quite often, then I use the Swarovski Medium case that comes with the EL 8x32, but which also came with the 8x42 SLC and it's good for most sizes up to 42, even quite tall models like the Canon IS III 12x36, or I guess something like a 7x42/10x42 Zeiss Dialyt. I wear it bandolier style and I find the strap (safety belt style) is so long and comfortable, that I literally forget I'm wearing it.
Otherwise, they're on my backpack.
Exception to this rule is when I'm carrying a compact or pocket model (Zeiss Terra 8x25 or Opticron Traveller 8x32) and I need to do other stuff, say I'm carrying my babygirl on something like a Ergobaby carrier (on my chest). Then I use the binoculars without any strap at all, and simply keep them on my jacket pocket. Same for when I'm cycling, I keep the binoculars on my handlebar bag, without any strap, kept inside a cloth bag that came with a Bushnell, that I find convenient ,because it doesn't add bulk.