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Message: <blockquote data-quote="adhoc" data-source="post: 3539150" data-attributes="member: 131373">Canip, that might be less improbable than you think, and might happen in a quick look at a raptor or other high-flying bird. Here is what Mike Alibone in Birdguides said in a review of the Trinovid HD 10x42 (<a href="http://www.birdguides.com/webzine/article.asp?a=5840" target="_blank">http://www.birdguides.com/webzine/article.asp?a=5840</a>). According to yourself (post #2 above) the older Trinovid that Riverstalker seeks "shows similar amounts of CA"."This glass is a different grade from that which is used in the Ultravid, accounting for the price differential. It may also account for the level of chromatic aberration evident in the image. Watching Common Swifts against a grey, though bright, sky for instance highlighted a greater degree of colour fringing in the centre of the image than I would have expected, but in all other viewing conditions this was largely unnoticeable."It happens that I am right now particularly alert for this situation with this model, as I am thinking of paring down my binoculars to just a pocket 8x20/25 and a 15x56, but sometimes think of adding a smallish 10x mostly for high-fliers, and the Trinovid HD is the smallest of the very good 10x42s. However, I have not used the more recent Trinovids or the SF, therefore am not sure how much that "greater degree" of CA will hamper ID, hence am open to correction by those with more experience.</blockquote>

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