Abstract: Systems and techniques are described for determining one or more lens positions. For instance a process can include moving a lens to a first lens position, determining a first light focus value for a first image captured at the first lens position, determining a first infrared (IR) focus value for the first image captured at the first lens position, determining whether the first IR focus value exceeds the first light focus value, moving the lens to a second position based on whether the first IR focus value exceeds the first light focus value, determining a second light focus value for a second image captured at the second position, determining a second IR focus value for a second image captured at the second position, and determining a focused lens position based on the second light focus value, the second IR focus value, and a threshold focus value.