Are 30x60 more powerful (inc night vision on them) then a 10x50?
Hi,
The figures are 30x magnification, and 60mm diameter for the objective lens (the lens nearer the item being viewed).
In addition, if you divide the 60mm by 30 you get the diameter of what's called the "exit pupil" i.e. 2mm. 2mm is quite small, and is the size of the circle of light you see looking at the eyepiece end of the binoculars; and is unsuitable for use at night, and is probably only OK when it's sunny, and you're steady. The 30x means that you will need a steady support e.g. a tripod, many binoculars have tripod sockets - often under a screwed cap.
(As a comparison, marine binoculars have been 7x50 for many years - these give a wide 7mm exit pupil letting lots of light get to our eyes, and helping to keep the view in sight on a wobbly boat.)