How good IQ on the V1?

The figures are quite clear on DxOMark, the V1 has a marginal advantage in colour depth, the two are equal in dynamic range, and the D4 has a significant advantage in low light performance. OK? There are of course other things that go to make a good picture, but a lot of that can be adjusted in post processing and is down to personal taste.

However, the V1 is small & light and has a x2.7 crop factor. If I buy a 300mm f4 plus TC14 I have an 800mm f4 or 1100mm f5.6, costing £1400 and weighing around 2300gr. The DX equiv would be around £7000 and 4500gr (and admittedly better IQ) which is why I bought the V1 - it great for shooting birds & small wildlife.

The point about the better IQ is that you can only SEE the better IQ if you print LARGE, or study the picture area by area on a pc screen.

What I am trying to establish is how much difference one can see in a picture shot on a V1 with a Nikon 70-300 and the same taken with a Nikon 300 f4. I don't have these lenses so I can't test it for myself.