I found that the only discussion about this lens is over on the old forum so I thought I'd continue it over here.
I just bought the D750 with the 24-120VR bundled as a kit lens. I tried this lens on a D600 at a dealers about a year ago and although the VR was pretty good (I thought the VR was great at the time but then I got the 70-200 f4 which as got phenomenal VR), but the lens struck me as 'meh' in terms of sharpness and contrast. I knew the light was really horrible in the shop (CFL's) as it gave the impression of being good enough, but at the same time did the products being sold no favours when customers actually tried them. However, the VR (essential for me) and useful range made it the perfect wedding lens so I went for it on my D750. My mindset was 'let's face it pixel-peeping high sharpness isn't really relevant to wedding shots is it'?
OK, a quick description of the 70-200: Sharpness - great, contrast - great, VR - phenomenal. So I'm thinking Nikon's f4 range of FX lenses are perfect for my purposes because the 24-70 has no VR.
I unboxed the D750 and 24-120 and shot a few things around the room - BUGGER! The lens is nowhere near good enough. Now I admit I haven't yet fine-tuned the AF, but the thing doesn't look sharp until f8! f4 is wtf, and sharpness does not greatly improve at f5.6 either.
Now, I'm trying to give up reading DxO Mark because I don't think it reads across too well in comparison to real life experience, but I am surprised that I haven't seen anybody raise this before on this forum. I realise there are a few 'brand loyalty before reality' people here who only ever say nice things about Nikon gear, but there are a lot of people who remain detached from all that and give praise/criticism where it is due. Perhaps none of them have this lens, though I doubt that.
Anybody else got any experience of this lens? I'm thinking of returning it to Nikon as not good enough. Whenever I've fine tuned a lens I've only improved it to a small extent so I'm sure no miracle is going to happen by doing that today. To be clear, 120mm at f4/f5.6 is 'bleah'.