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Message: <blockquote data-quote="adhoc" data-source="post: 3482017" data-attributes="member: 131373">Thank you David and George. A mounted 12x binocular will then be as good as a scope of 10-25% more power (David) or 33-67% more power (George), which is 13.3x-15x or 16x-20x, which averages to 16.7x. (Correction: please see PS#2.)David, I prefer your summary as the article is not very light reading! It is not a perceptual but a more objective conversion ratio that I was thinking of. For a proper test it will be difficult to find several instruments of differing power with other parameters also equivalent across the range. Maybe a special zoom device needs to be made. Or if someone could get hold of two Leica Duovids, or better two each of the two Duovid models ;-)George, your comments on 12x are useful in general but this does depend of course on the steadiness and the visual acuity of the user. I envy your "combo" which is the ultimate in my own quest for a minimal set! But for certain reasons going that far will not work for me. I too had remembered reading something like 20-25% and with your tipoff now found it in Binomania (in the Meopta 15x56 review). More ideas on this ratio are welcome, even based on "gut feeling", for the present.PS#1. I should have added there: Although the power of the Duovid is stated to be "switchable" I have read in a user report that it can be varied continuously (zoom-wise).PS#2. Sorry, I note that 33-67% was the ratio suggested only for 15x and was not claimed for 12x. Thus, going by those two sources, the max. for 12x may be less than 20x and the average less than 16.7x.</blockquote>

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