SVBONY SV10 8x25mm Binoculars for Sports Porro Prism Concert Binoculars Auto Focus Binoculars for Football Rugby Basketball Sport Events Camping Opera

I've never had autofocus binoculars before, although I remember asking in physics class all those years ago why - if prisms were always in focus - binoculars needed a focus knob. To be fair, my wife can't get used to the autofocus, but for me it means that I can lift the binoculars and immediately find what I'm looking for, instead of having to point in the right direction and then hunt the focus knob. So I catch more of these flighty birds and animals that I got the binoculars to see.I wear glasses for distance. The binoculars work well without glasses and with glasses with no need to adjust (they do move the focal distance so i can see distant but not near when looking through the binoculars).They let plenty of light in - about right for their size (the first number is the size of the front lens which is a measure of how much light gets in) - so these are fine to use at night too.Note that autofocus relies on your eyes being able to change focus (in my case, from near to middle distance). If you wear varifocal glasses (ie your eyes don't do any work) then you will either need to move the binoculars across the glasses or decide that autofocus isn't going to work for you - and go back to conventional focus knob binoculars. It isn't really "autofocus" so much as "your eyes are as auto as it gets".