Celestron 71454 Echelon 20x70 BaK-4 Prism Binoculars, Black

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It would be a shame to send back such good binoculars only for the seller to collimate and sell them again to one who would actually appreciate them. With a pupillary distance of 16mm, the eyepiece construction is still suitable for people who wear glasses. It was a terrible disappointment, with excessive chromatic aberration and generally poor performance. Special remuneration on all optical surfaces further enhances the image quality and ensures life-rich colors.

The soft plastic objective lens covers fit nicely over the ends of the 70mm barrels without being too loose or tight.But for regular and proper care of your lenses I highly recommend that you invest in a specialist optical cleaning kit.

This combined the fact that is is slightly curved to fit better around your neck and shoulders means that it is nice and comfortable to carry these comparatively heavy optics. I have one 8x30 zeiss , 30 years old but with amazing lents and brightness so my idea was to increase magnificient.Also all the glass surfaces that the light bounces off within the porro prism reflect 100% of the light that hits them. If you happen to wear eyeglasses and wish to observe with them on, eye relief becomes very important. The objectives are a different size (80mm vs 90mm) and there's no mention on the Strathspey site that they use triplets. Because of their shape and they way that the light enters and exits these prisms, it usually means that they make for a less compact bin than those that use a roof prism where the light exits the prism in the sane line as it entered it. As this type of observation is mostly based from a fixed point, transportability and ease of carrying are not the biggest concerns, which is a good thing because as you increase the size of the main objective lenses, the overall size and weight of the instrument obviously also increases.