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Message: <blockquote data-quote="typo" data-source="post: 3174636" data-attributes="member: 83808">Ron,Thanks for sharing some of your data with us.I'm a little confused by that Monarch 8x36 MTF result. Is that the right plot you attached? You said it had a resolution of 7 arcseconds but when I apply your formula to convert cycles/degree to arcseconds using 8x as the magnification I get something wildly out. Is there some other magnification in the optical train that should be included as well?I'm supposing that was done using your Nikon Coolpix 5700 which has the pixel dimensions shown, and 2560x1920 pixel dimensions. The MTF50 figure is 10.4c/d but a value of 1012 Line Widths per Picture Height value is shown. That would be 1012/2 = 506 Line Pairs/ Picture Height. That works out a 1920/506 = 3.8 pixels/cycle or (3.8 x 10.4)/14.3 = 2.8 pixels/cycle for the MTF5 value if I've got it right. Apologies if I've misunderstood something but if my numbers are right doesn't that rather look rather like the plot is the MTF for the Camera not the binocular?Regards,David</blockquote>