Producing a lens or lens system for military use requires careful consideration of its resistance to vibration, shock, temperature and water ingress in addition to ensuring high reliability and top performance. The benefits of sourcing a designed for purpose MIL-SPEC lens extend far beyond operational considerations as many contractors will admit to the huge amount of time they have wasted on trying to adapt ‘low cost’ off-the-shelf lenses without success. In a military scenario – operators demand much higher reliability than for commercial products. Resolve Optics MIL-SPEC lenses have much higher life expectancy than regular commercial grade lenses. The defective rate is also extremely low.