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Message: <blockquote data-quote="kkokkolis" data-source="post: 3284902" data-attributes="member: 127913">Can you be more specific? When you say "top", do you mean that the 10x42 equals an alpha class Zeiss/Leica/Swarovski? Specifically regarding color aberrations and sweet spot size?I see that it is as heavy as the 18x50 is, which I have (and a 12x36 also). I'm happy with the 18x50 (after all it is a porro, with field flattener and UD glass and all). What would one gain with the 10x42 over the 18x50 which has higher resolution? Except the bigger exit pupil, since you get an even bigger with a good 8x42?</blockquote>