Hello, everyone on this long and fascinating thread! Steve Thompson here from the Isle of Wight, UK. I thought I would give some reflections on the issue of Nino quality as someone who has been actively birding for 48 years. In 1979 I bought my pair of Zeiss Dialyt 10x40s. They have been on every continent bar Antarctica and have been through every weather, including a week on Stewart Island and a week in Fjordland Nz . Never seen so much rain! In deserts and rain forest faultless performance with, most importantly, some excellent views of birds. I decided having borrowed some Zeiss Victory FLs and using Swarovski ELs to add Victory FL 10x42s to our optics. My wife and I use both since 2012. I decided on the Victory model as I simply felt most at ease with it, though I wouldn’t like to say which is sharper in the field compared to the Swarovski. The FL glass does make a difference compared to the Dialyt and more bright detail is visible in low light - watching Hen Harrier coming in to roost at sunset in winter everything is visible. The build quality is excellent and the most important point is that I never feel distracted from birdwatching worrying about the binos( though my wife now does want to upgrade the 41 year old Dialyt!) Binos are not jewellery in other words as some have commented already! I will upgrade the Dialyts with either Swarovski ELs or Victory HTs probably as the NL range is too expensive for me and the comments here do make me hesitate about buying new models. Incidentally, I still use my Optolyth TB80 scope,, bought in 1986, except in the rain when draw tubes are a liability, and might upgrade this so I can use a scope in all weathers. I would comment, however, that in hot weather looking at distant Ospreys the heat haze meant the Swarovski 95 gave no better an image at 40x magnification. It’s what real world use is about. I have enjoyed the comments and clearly very experienced views on this thread - remember as a number of you have said, it’s watching the birds that is the key, albeit with the best most reliable gear you are most comfortable with.
Steve