I was always happy with my Nikon 70 - 300 G lens on my D7200 but since moving to a D750 I've become disappointed with its capabilities. I was original considering replacing it with the 70 - 200 f4 but then thought I would miss the range through to 300mm (especially coming from a crop body (yes I know all about that being an illusion and its just the field of view that changes)). My thoughts then moved on to the newer Nikon 70-300 P lens. Is there anyone out there who has had real world experience of upgrading from the G to P on a D750 and was it worth it? My other lens is the 24-120 f4 and if I did decide on the 70 - 200 f4 to augment it , would the overlap be too great to offer much benefit? Regards Neil.