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Message: <blockquote data-quote="lilcrazy2" data-source="post: 2012914" data-attributes="member: 86894"><p>I have great difficulty buying into the concept that a longer bino of the same magnification delivers a greater DOF. In comparing my very short 8x36 Legend Ultra HD and 8x42 ZRS HD against a very long Promaster 8x42 ELX-ED, I certainly noticed no difference in the DOF in the testing I did. The one thing I did notice is that it took much more than a slight bump to focus the Promaster at 40m range due to its very slow focus rate. On a measured test course, I doubt the 7x36 Zen ED2 would have any difference in DOF than any other 7x roof, or that the 10x Zen ED2 would out DOF the 10x ZRS HD.</p></blockquote><p></p>