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Message: <blockquote data-quote="Kevin Purcell" data-source="post: 1404530" data-attributes="member: 68323">A quick ABC between the ZRS 8x42, Bushnell Legend 8x42 and Vortex Diamondback 8x42 late this afternnon as the cold winds were blowing, some clouds were building and the sun is starting to set.I see the ZRS has a noticeable color bias, especially when switching between bins, and seems not quite as bright as the other two. The Legend is clearly the brightest (and whitest) of the three to me. The Diamondback appears slightly brighter than the ZRS with a little bluish cast (which is a little different from my previous test).Looking at perched American Robin's red breast I don't find they stand out in the ZRS despite the warm bias and they became more difficult to see as the light dimmed as compared to the other bins (though eventually all got to a similar point).On the Zen ED thread FrankD said:This morning as the snow hasn't quite arrived I did a similar ABCD test in a different location using the ZRS 8x42, Bushnell Legend 8x42 and Vortex Diamondback 8x42 again and adding the Leupold Cascades 8x40 porro. It's another similarly priced bin. The sky is overcast but the sun is just visible through it. It's bright for a cloudy day.I looked at a three story red brick building 200m (660 feet) away with Rock  Doves, Glaucous-winged x Western hybrid Gull and Starlings sitting at the top. Of these the gull was the best for detail and coloration: gray mantle, yellow bill with red mark, dark eye and flesh colored legs. He sat around for some time. The building also provided some nice sharp horizontal and vertical edges with bright sky behind them for CA testing.So the results seem similar to before. The brick building and the light grey sky behind it I see the color biases clearly. The Legend and the Cascades have similar brightness and essentially no color bias (neutral). The Diamondback is very slightly bluish and a little less bright. And the ZRS is warm making the red brick look more orange and not as bright as the others.I perceive the sharpness, when focused correctly and diopter set, that all the bins seem to be about equally sharp when looking at features on the gull. I presume I'm limited by my own acuity which is good.Using the bright sky behind the edges of the bin I find it easy to see some chromatic aberration/stray color in these bins at varying levels. I see all the bins seems to have similar CA when the eye's are centered correctly. Perhaps the ZRS is a just a little better (more a hint of something rather than seeing fringes) with the Diamondback next then the Legend and the Cascades which show hints of fringing in the best case. When I move my eye off axis the Legend and the Cascades make more (transverse) CA more quickly. The Diamondback appears to generate rather less TCA with this test and the ZRS perhaps least of all (but there is some off axis). I speculate the previous "lack of sharpness" might be attributable to the lower transmission compared to the other bins and perhaps the color cast of the bins too compared to my eyes.</blockquote>

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