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Message: <blockquote data-quote="Kammerdiner" data-source="post: 1615491" data-attributes="member: 75300">Color variations can be subtle, or not. If not, most anyone will notice. This is the "yellow cast" people mention, a very narrow bias in color. But subtle differences do exist even among alphas. Many find the Leica coatings to be the most neutral, Zeiss to be a bit cool, Nikon a bit warm etc.In my experience it mostly it has to do with an overall shift in color temperature (rather than a sharp bias). A "warm" binocular will warm up colors across the board. A "cool" binocular will cool them down.But I suspect a part of the perception of these differences exists within the individual. To me, the Leica is the most "natural" of the bins I've used. Zeiss, to me, does not seem cool, however. It is, if this makes much sense, a different shade of neutral (I just got these Zeiss, so extended use might change my assessment). The Nikon SE and Pentax ED both seem warm, however, at least in comparison.Add to that some individual weirdness. For instance, my left eye sees things distinctly cooler than my right eye. I discovered this while doing a routine diopter adjustment. It's unmistakable in all my bins and I have no idea how that affects my color perception.Overall, a complex issue.</blockquote>