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Message: <blockquote data-quote="Swedpat" data-source="post: 3142735" data-attributes="member: 21414">Interesting question. I would like to know: have the improvements been subtle or major the last 10 years? I would say pretty subtle. 1-2% percent higher light transmission and slightly better edge sharpness. So the more we approach the perfect optics the smaller the improvements can be. That's a mathematical fact! Some single percent higher light transmission is maybe achievable, and that will not be noticeable at all: the best stated light transmission is 96%(Swarovski Habicht) and if that's correct it means it will never be made a binocular with noticeable brighter image than existing today.The resolution is today probably higher than the average eyesight is able to make use of. An even better resolution will demand higher magnification than handhold magnifications to reveal. So I am pretty sure we are very close to the limit today.Conclusion: buying the highest class binoculars today means there will probably never be made a binocular with more than very subtle improvement. Personally I believe that edge sharpness and flat field is the only parts who are possible to improve in a noticable way, read that these are still not perfect.</blockquote>