I've yet to give my 8.8mm ES82 a real test, but so far, I am very impressed. I tested the 11mm ES82 against my 10mm Zeiss ortho on faint stars in NGC 2158 with my 6" refractor and could not determine any difference in limiting magnitude between them, which is extremely impressive, given that the 11mm operates at 10% lower magnification. There was also no difference in perceived sharpness, although it must be admitted that perhaps an open cluster is not the best target for judging this.
Unfortunately, I have no Naglers with which to compare them, only orthos and plössls from several different makers.
From what I've seen so far, I'm extremely impressed with my ES eyepieces. They have already delivered more than a few "best ever" views of several different objects in several different telescopes.
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