This chart works a lot like our binoculars – it brings everything into focus.Item # UPC Code Magnification Objective Lens Exit Pupil Eye Relief Prism Type Prism Glass Lens Coatings &(050332-) Diameter (mm) Diameter (mm) (mm) UV Protection108798 133815 8x 42 5.3 19 Roof BaK-4 Fully Multi-CoatedPhase & UV Coating108799 133822 10x 42 4.2 15 Roof BaK-4 Fully Multi-CoatedPhase & UV Coating108787 133846 8x 42 5.3 18 Porro BaK-4 Fully Multi-CoatedUV Protection108789 133853 10x 42 4.2 18 Porro BaK-4 Fully Multi-CoatedUV Protection108791 133839 12x 50 4.2 18 Porro BaK-4 Fully Multi-CoatedProtection118750 140806 7x 35 5 12 Porro BK-7 Fully CoatedUV Protection118755 140837 8x 40 5 12 Porro BK-7 Fully CoatedUV Protection118760 140868 10x 50 5 12 Porro BK-7 Fully CoatedUV Protection118765 140899 8-16x 40 5 - 2.5 10 - 12 Porro BK-7 Fully CoatedUV Protection118707 137424 8x 25 3.1 18 Roof BaK-4 Fully Multi-CoatedUV Protection118708 137455 10x 25 2.5 16 Roof BaK-4 Fully Multi-CoatedUV Protection118709 137349 8x 21 2.6 11 Roof BaK-4 Fully Multi-CoatedUV Protection118710 137387 10x 21 2.1 11 Roof BaK-4 Fully Multi-CoatedUV Protection118700 134119 8x 25 3.1 16.5 Porro BaK-4 Fully Multi-CoatedUV Protection118701 134126 10x 25 2.5 15 Porro BaK-4 Fully Multi-CoatedUV Protection118702 134133 12x 25 2.1 16 Porro BaK-4 Fully Multi-CoatedUV Protection118703 134140 8-16x 25 3.1 - 1.6 15 - 12 Porro BaK-4 Fully Multi-CoatedUV Protection118704 134157 10-30x 25 2.5 - 0.8 15 - 8 Porro BaK-4 Fully Multi-CoatedUV Protection118770 135840 7x 21 3 11 Porro BK-7 Fully CoatedUV Protection118705 134164 8x 21 2.6 11 Porro BK-7 Fully CoatedUV Protection118706 134171 10x 21 2.1 11 Porro BK-7 Fully CoatedUV ProtectionCategory ModelMagellan 8 x 42 EXWP IMagellan 10 x 42 EXWP IPathfinder 8 x 42 EXPS IPathfinder 10 x 42 EXPS IPathfinder 12 x 50 EXPS ITrooper 7 x 35 DPS ITrooper 8 x 40 DPS ITrooper 10 x 50 DPS ITrooper 8-16 x 40 ZOOM DPS IMagellan 8 x 25 WP IMagellan 10 x 25 WP IOutback 8 x 21 RC IOutback 10 x 21 RC ITracker 8 x 25 PC ITracker 10 x 25 PC ITracker 12 x 25 PC ITracker 8-16 x 25 ZOOM PC ITracker 10-30 x 25 ZOOM PC IRoamer 7 x 21 PCIII CLASSICRoamer 8 x 21 DPC IRoamer 10 x 21 DPC IPage 1