Excerpt: Nikon's action extreme 7x50's offer a clear, bright picture at a fraction of the cost of more compact roof-prism binoculars. The porro prisms offer several advantages. 1. they are more comfortable to hold IMO. 2. they are a better value optically, and 3. they offer greater depth-of-field.
Pros: Quality Lenses, Strong Construction, Waterproof, Works Well With Glasses