According the CMC page with the 14-42PZ frame widtg 24mm in 4K that becomes 20mm and working distance 49mm
Panasonic Lumix G X Vario PZ 14-42mm f/3.5-5.6 (42mm) 17 mm 98 mm 307 mm 24 mm 0.7 : 1
One thing that I am a bit worried about with such a strong lens is the working range. So 49mm is the minimum distance with the camera focussed at the closest but what is the distance with the camera focussed at infinity? If this is equivalent to a +15 diopter the range is 49 to 63mm which is really small
So there could be many situations where you go out with this lens and you are not able to get anything in focus.