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An irreverent look at the Quattro vs Merrill thing....

Started Aug 14, 2017 | Discussions thread
tagscuderia
tagscuderia Senior Member • Posts: 1,957
Re: An irreverent look at the Quattro vs Merrill thing....
1

docmaas wrote:

Looks like a big difference is the luminance noise in the quattro. Not sure if Tim tried to remove it via spp or not but it looks like not. It would be worthwhile to do a similar test and remove the luminance noise.

Merrill's top layer SNR is 160% to that of Quattro with a "white" illuminant. The middle layer's SNR is basically a wash between the 2 sensors (which surprised me) and whilst Merrill's bottom layer can be exposed up to 2EV less than the top, with IR that's undoubtedly lessened. N.B, Quattro averages 0.5EV across its layers.

Also, given that the top layer isn't very sensitive to IR, with Quattro you might be resolving closer to 5MP rather than 20MP, so Lo-res might be worthwhile for IR work?

Quattro's monochrome mode is based upon a colour conversion as well which is probably a hindrance.

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