When it's likely that the sun will quit before you do, make sure you're looking through a Leupold VX-5HD 1-5x24mm Rifle Scope. The Edge-blackened lens and Twilight Max Light Management System work together to block out glare and deliver usable light to your eye that creates crisp, high contrasting images in low light situations. In addition to being 100% waterproof and fogproof, the Leupold VX-5HD also uses a 2nd Generation Argon/Krypton gas blend to eliminate the effects of thermal shock. And with the Custom Dial System ZeroLock 2 (CDS-ZL2) when you lock in on zero, you stay there thanks to the pop-up finger-click dials that stay covered to prevent accidental movement. Twilight Max Light Management System The Twilight Max Light Management System provides superior brightness and clarity by optimizing three key elements: Effective light transmission in all conditions; Enhanced glare reduction; Crisp contrast and resolution. That means you see better, even in low light and bright glare, and you can more easily pick out low contrast targets (like tines in heavy timber). Edge-blackened lens helps block out glare and the FireDot Duplex Illuminated reticle is daylight bright for quick target acquisition and stands out against cover Motion Sensor Technology automatically switches reticle illumination to Stand-By Mode after 5 minutes of non-use and reactivates when the rifle is moved Extreme fast-focus eyepiece has a generous eye box, a superior field of view and allows you a full range of adjustments in a single, complete turn Second-generation Argon/Krypton gas not only keeps your scope fogproof and waterproof, it also eliminates the effects of thermal shock Guard-Ion lens coating sheds water, dirt and fingerprints to make lenses durable and scratch-resistant Custom Dial System ZeroLock 2 (CDS-ZL2) elevation dial locks in place so it can't be accidentally knocked off zero, pops-up when adjustments are needed and shows when you are on the second revol