What the imager has

Started Feb 11, 2014 | Discussions thread
D Cox Forum Pro • Posts: 20,316
Re: What the imager has

ilsiu wrote:

The new sensor has 19 + 5 + 5 MP; I think it would be a good guess to say that it would resolve less than a hypothetical 19 + 19 + 19 MP sensor, but how much less? Will it be equivalent, better, or worse than the current 15 + 15 + 15 sensor?

How much less will depend on the test texture. For small patches of red and green of equal brightness, there will be some loss. For fine black and white lines, there will be no loss -- the resolution will be the full 20 (real) Megapixels.

This compares with the 18 green Mpix in a D800 or a Sony A7r. These cameras have 9 Mpix for blue and red, as oposed to 5 in the Quattro; so they should give slightly better results for chroma-only test charts.

A test chart would have to be lit by light of the right colour for the red, green or blue patches or lines to match in brightness.

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