Fixing Zeiss 25mm 2.8 ZF couldn't focus at infinity problem

Rotate the lens barrel you can find 3 screws and a flange holding a small helical that control the floating lens group (Nikon calls that Close Range Correction lens), other than the larger helical that control the main group of lens, by adjusting the origin position of this small helical you can calibrate the nearest and farest focus point of the lens.

Done