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Thanks for the correction! I'm not sure what I was thinking there, it was a bit of information overload last night. What I meant to say was I would like a pair of binoculars that give a similar performance in terms of "effective" aperture, a workmate had told me once to remember that binoculars gathered twice as much light for a given aperture. I was trying to find a quantitative description of this.
Anyway I am leaning toward the bbfmc 11x70 pair, since that seems like a good tradeoff between light gathering, mag, price and usability. I'm not sure how to compare a 11x70 to a 15x70 because the site describes the 11x as having better sharpness and contrast?
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