Otherwise, the two binoculars are very similar, sharing the same core features such as: BaK-4 prisms and a porro prism system.
The Action 10x50s' 50mm lens diameter allows more light to enter the binoculars to be focused, resulting in improved overall image brightness and excellent performance in dim lighting conditions. Their BaK-4 glass prisms provide the Action 10x50s with brighter images and greater overall image sharpness and clarity than lower quality BK-7 glass prism binoculars. Additionally, the Action 10x50s' porro prism system provides improved depth perception and a generally wider-field of view than similarly sized and rated roof prism binoculars, though at the expense of some durability.
