The NL Pure line begun off that has a brace of styles in the principle birding aperture of 42mm, followed by the ever more well-known compact 32mm format. The most important aperture 10x52 and 14x52 models are The newest additions, changing the 10x50 and 12x50 ELs within the more substantial size.Tips for getting Binoculars for Bird-watching Opt fo