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Message: <blockquote data-quote="Nixterdemus" data-source="post: 3657261" data-attributes="member: 96265">The Conquest HD 10X42 w/Schmidt-Pechan prisms transmission, according to allbinos, is 93%. The earlier Conquest 10X40 w/Abbe-Koenig prisms was 93%. Both Conquests have T* antireflection multicoatings though I readily agree it is possible that the HD coatings might have been upgraded.I own the 10X40 though have never viewed through the HD. [Yes, I've heard they are better many times especially in the reduction of distortion]I have compared the Conquest 10X40 to the Trinovid 10X42 [which has a better 10X class FOV 114M/6.52 than the 8x42 Trinovid in 8X class. Allbinos measured the Conquest HD 10X42 at 6.51* so that aspect is a wash]. There is no allbinos review of the Trinovid HD, when they do I'm sure it will not score 10/10 on distortion, Leica claims a mere 90% transmission. That being said the colour representation of the Trinovid to these eyes is more vivid in a side by side w/10X40 Conquest. Full sun to low lying completely overcast clouds. All colours have a bit more pop to me. Regardless, I'm sure either bin would be more than sufficient. As a disclaimer I have a mild cataract in the left eye and have had cataract surgery in the dominant right eye w/AMO Tecnis 1 piece mono aspheric intraocular lens. I do not require corrective lens for driving, but I'm not 20/20 either.As always, YMMV ...</blockquote>