Even several years ago the Ranger series, produced by the German Steiner company, consisted of five porro prism binoculars which were a cheaper alternative to the top-of-the-range Night Hunter instruments. Rangers' quality was uneven.
very solid; stylishly interesting casing; negligible astigmatism; slight lightness fall-off on the edge of the field of view; good whiteness rendering; excellent blackening and cleanliness inside the inner tubes; good quality of prisms
noticeably truncated exit pupils; significant chromatic aberration on the edge of the field of view