I'm pleased to see this thread, as I was budgeting £50 for binos. I'm not rich nor am I a frequent birdwatcher, but would like something a bit better than what we have now. When we go out we have two binos owned by my partner. One set is a larger, but very old set. They don't have a good image, often with double images, and are hard to use. The other set are a compact 7x25 set, which seem OK, and are easier to use. I think they cost £10 or so second hand at astrofest.
However, I don't really think I can justify spending the type of money that people on here are talking about. At a more recent astrofest, someone was selling binos. While these would have been binos selected assuming that potential purchasers would use them for astronomy. When I tried pointing some £50 binos at trees, the images looked fine to me, and much better than what we have now. Certainly enough of an improvement to justify the price. Sadly I didn't write down the make and model at that time.
Looking around, and thinking that I want something to complement the 7x25 binos we have, not replace them, I'm currently looking at these two:
http://www.scopesnskies.com/prod/bi...ter-10-30x50-high-powered-zoom-binocular.html
These have a large lens size, making the 10x magnification plausible. From what I've read and my limited understanding of binos, the 30x magnification may be useful in bright light, which will typically be the case when I'm using them. Though, I think if I had binos useful for using at night, that I'd use them. Observing foxes, for example.
The following ones have a larger lens, but a fixed 16x magnification, and they may be heavy.
http://www.scopesnskies.com/prod/big-binoculars/adler/saturn/16x70.html
I've looked on walters photo and video for second hand binos, but while there are many products in my financial range, I don't know which are which. And they all seem to have small lenses. In thinking "big lens is better" am I misleading myself?
OK, back to reading pages on "how to choose binoculars".