There is a widely accepted view that large camera sensors produce better pictures. In Nikon terminology, that means that a big FX sensor is better than a smaller DX sensor, which is better than the really small CX sensor. That is true in most cases. However, when one compares old cameras with new ones, occasionally the roles are reversed.
Some examples using DXOMark's criteria:
The 2012 DX camera D5200 vs the 2007 FX camera D3:
This is an eight year difference, and even though the CX Nikon 1 has an overall advantage in DXOMark's rating, it still lags behind the larger sensor when it comes to low light.
Like all comparisons, this is not the whole truth of course. There are many other aspects on cameras than what is measured by DXOMark. The point is simply that for certain things, new and small can be better than old and big, even when it comes to camera sensors.
Some examples using DXOMark's criteria:
The 2012 DX camera D5200 vs the 2007 FX camera D3:
That's a five year difference. The DX camera has a better overall score, but it still lags behind the FX in some areas, like low-light ISO.
This is an eight year difference, and even though the CX Nikon 1 has an overall advantage in DXOMark's rating, it still lags behind the larger sensor when it comes to low light.
Like all comparisons, this is not the whole truth of course. There are many other aspects on cameras than what is measured by DXOMark. The point is simply that for certain things, new and small can be better than old and big, even when it comes to camera sensors.
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