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Message: <blockquote data-quote="Leif" data-source="post: 1106813" data-attributes="member: 1250">Your post is very informative, but as far as I know the eyepiece can compensate for aberrations in the objective. The information is still there. Indeed in many compound microscopes it is inadvisable to mix and match objectives and eyepieces from different manufacturers. Nikon puts all of the corrections in the objective. Olympus doesn't. Whether or not that is so for binoculars, I have no idea. I suspect I know who here can answer that one. On a related note, many software packages can automatically correct for CA, partially or wholly, in an image given the nature of the lens. In fact quite a lot of aberrations can be corrected for in software if you know details of the lens.</blockquote>