As sensor backlit micro lenses gapless photoreceptors ( aka pixels ) maximum opportunity gather light.This Expeed 5 processing engine enabled Nikon give camera standard sensitivity range ISO 64-25,600.There also expansion settings extend range equivalent ISO 32-102,400.Another feature ears Nikon lovers pricking inclusion autofocus ( AF ) system Nikon ’ flagship camera , D5.This 153 points centre point sensitive -4EV rest sensitive -3EV.A total 99 points cross-type.It means D850 suitable shooting sport action low light conditions.Like D5 D850 180,000-pixel RGB sensor inform metering , white balance , autofocusing scene recognition system.This functions -3EV – useful low light photography.As D5 ’ autofocus ( AF ) system ’ really surprise find ’ shooting using viewfinder D850 focus quickly even low light conditions .