Excerpt: Many reviewers complain about the difficulting of adjusting focus. I find it perfect and easy to do. These are made in China. They seem well made. The image is nice and bright, as it should be for a 10x50 Porro. They are also heavy (as the specs say), as expected. Chromatic aberration is detectable near the borders but only if you look for it - in normal use, it is not an issue. The Barska tripod adapter does not tighten fully on these binos.
Excerpt: Excellent quality optics! Just the right objective lens size to weight ratio. Not too heavy for short-medium use, but might get heavy for long term use.Night use: I used these in a light polluted area and was still able to see M8 - Lagoon Nebula, M31 - Andromeda Galaxy, M13 - Great Cluster in Hercules and several other nebulae and globular clusters. While you can't resolve Saturn rings, you can see that it has a distinct oblong shape.
Pros: Quality Lenses, Strong Construction, Waterproof, Works Well With Glasses
Summary: Simply put these are excellent binoculars - excellent clarity during the day and also at night. On a moonlit night, I can see a fair distance into the woods behind my house. Of course the snow helps. I wear glasses but I do not need them viewing through these binoculars which is a blessing because glasses are a pain when using optics. Focus is easy and they are relatively light weight and easy to carry. Nikon utilizes good quality glass for its optics.
Excerpt: My primary purpose for these glasses will be for viewing the night sky objects. They are the size most recommended for this purpose. The 50mm (2 inch) frontlenses gather plenty of light and the 10 power magnification is adequate. Larger glasses are just to heavy to be hand-held and the field of view would be too narrow. These should be perfect for viewing comets although ISON blew apart before I ordered these.