Brilliant and flexible.
The Duovid 8+12x42 and the 10+15x50 are they only high performance binoculars to offer a choice of two magnifications - all in one pair. If you are observing over long distances or in critical situations with little light - these binoculars consistently deliver you brilliant images but can also adapt to yor chaning situation. You can easily change from one magnification to another which is an advantage that no other premium binocular offers. So if its both overview and fine detailed observation you require - then a Duovid, with both its magnifications is your option without any compromises.