Pentax 9x42 S-Series SD WP Binocular

Apart from that very specific transmission graph too high chromatic aberration is the only flaw of the tested Pentax; in other categories the binoculars fared decently well, good or even very good.

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  solid, waterproof casing,, moderate astigmatism,, excellent distortion correction,, lack of coma-related problems,, very low brightness loss on the edge of the field,, dark areas near exit pupils,, sharp images already from 1.7 metres,, good quality prisms made of BaK-4 glass,, proper blackening and...

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  too low transmission in the centre of the visible spectrum,, bluish cast of images,, a bit too high level of chromatic aberration.