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Message: <blockquote data-quote="typo" data-source="post: 2968630" data-attributes="member: 83808">Gijs,I used the term sharpness as in this case it's a judgement by eye. In each case it was comparison to other binoculars including my usual pair. In the case of the Nikon the edge definition and discernible detail was at least the equal of my usual pair, and pretty close to the Nikon EDG. In the case of the Lynx, it was clear the edge definition in particular was a little softer than the Kite Petrel I mentioned and my regular pair but better than a Celestron Trailseeker for example I also tried. I didn't have a Swarovski CL to compare on these occasions, but all the dozen or so I've tried have done badly in similar comparisons.I don't have the instrumentation to measure MTF and it can be difficult to distinguish between contrast loss and optical resolution limits by boosted resolution testing. However I would offer the opinion that with modern fully multicoated binoculars the effective optical resolution is frequently the principle component of reduced sharpness. In very, very cheap roofs or vintage uncoated or basic coated binoculars I suspect the reverse is often true. I've only played with a few but masking down the objectives has both increased the contrast visually and improved the boosted resolution values.Hope that helps.David</blockquote>