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Message: <blockquote data-quote="henry link" data-source="post: 3418524" data-attributes="member: 6806">I doubt that anything has changed with the 8x54 HT. Zeiss didn't think there was a problem back when I did those tests. Here's a link to a comparison between the 8x42 HT and my 8x42 and 8x56 FLs.<a href="http://www.birdforum.net/showthread.php?t=313034" target="_blank">http://www.birdforum.net/showthread.php?t=313034</a>IMO, what keeps those two HTs, as well as the Swarovski 8x30 Habicht I recently bought, from achieving something I would call "crystalline clarity" are axial aberrations that are a bit too high, particularly spherical aberration. They look fine compared to each other or to binoculars with similar or higher aberrations, but they all lack the highest degree of center sharpness, even for my quite average 20/15 acuity. To notice that you need to use a reference optic (like the 8x56 FL) with lower aberrations for comparison.</blockquote>