Quattro high iso 800-1600. Iso 100, IQ, micro-details, 19Mpix - 39Mpix.

[Gate bois]

Some treatment trials on photos from quattro.

Dp2 quattro.
RAW me that send a member of the dpreview forum.
Interpolated 39Mpix.
DP2Q0950-portrait-NR Lum0-39Mpix-Mitchell-RT-OK-bis by Noël Billy, sur Flickr

Previous
SPP 19Mpix - portrait mode Luminance NR NR 0. RawTherapee lum. , accentuation.

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Interpolated 39Mpix.
DP2Q1148-portrait NR Lum0-39Mpix-Mitchell-RT-OK by Noël Billy, sur Flickr

Previous 19Mpix
SPP portrait mode Luminance NR NR 0. RawTherapee lum. , accentuation.

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39Mpix.
DP2Q1431-portrait NR Lum0-RT-39Mpix Mitchell by Noël Billy, sur Flickr

Previous
SPP 19 Mpix - SPP portrait mode Luminance NR NR 0. RawTherapee lum. , accentuation.

Previous 19Mpix - SPP standard mode, NR default values proposed by SPP.

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39Mpix
DP2Q1029-portrait NR Lum0-39-39Mpix Mitchell by Noël Billy, sur Flickr

Previous 19Mpix
SPP portrait mode Luminance NR NR 0. RawTherapee lum. , accentuation.

Previous 19Mpix - SPP standard mode, NR default values proposed by SPP.

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36 Mpix
DP2Q1299-portrait-RT-NR-36MpixMitchell-bis by Noël Billy, sur Flickr

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36Mpix

Previous 19Mpix
SPP portrait mode Luminance NR NR 0. RawTherapee lum. , accentuation.

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19Mpix
SPP portrait mode Luminance NR NR 0. RawTherapee lum. , accentuation.
Falun 013-portrait NR chro-lum 0-RT-contrasté photoshop by Noël Billy, sur Flickr

Previous 19Mpix - SPP standard mode, NR default values proposed by SPP.

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Pictures taken on the occasion of a photo show which took place in Paris, where I had the opportunity to test quattro.

Dp3q iso 800. SPP and RawTherapee.
SDIM0455_iso 800-RT-1 by Noël Billy, sur Flickr

Dp2q iso 1600. SPP and RawTherapee.
_P2Q0642-1600iso-NEW1-RT by Noël Billy, sur Flickr

[Bruce Cox]

What advantage do you see RawTherapee having over Photoshop?

The attached is DP2 Q at 400 ISO, SPP only, other than croping the right and left in Photoshop.

[Gate bois]

If you can, try yourself RawTherapee (it's free), it will let you make your own opinion.
RawTherapee offers several possibilities for the treatment of sharpness, micro-contrast.

[Alan Smallbone]

it would be nice if someone would actually make a better raw processor then the Sigma one, the Kalpanika one is close but still not right. Or that Sigma fixes their highlight recovery in SPP, that is my only real issue with the Quattros.

Alan