Canon's embedded JPG's look always more blueish, brighter, and seems to
have a little more contrast than DT's RAW's, but that's a personal thought
2014-03-19 11:08 GMT+01:00 Robert William Hutton <[email protected]>:
> On 19/03/14 08:24, Martin Marmsoler wrote:
> > I want to edit some photos in darktable but when I have imported the
> pictures in darktable, I saw, that the colors are
> > totaly diffrent to the colors of the normal pitcureviewer from ubuntu
> 13.10. Also the photo is fuzzier then in the
> > pictureviewer. But why there is so a great diffrence between the two
> pictures? Here the photos:
> > https://www.dropbox.com/s/m60n54544jc0m9q/Picture1.png
>
> The image on the right is the embedded JPG preview. The image on the left
> is the RAW file, minimally processed by
> darktable (white balance, demosaic, minimal sharpening and base curve).
> In order to produce the right image, the camera
> has applied any number of additional filters, the minimum of which will be
> sharpening, noise reduction, contrast
> enhancement, and it looks like it has picked a slightly different white
> balance to what darktable has chosen as well.
> Also, the RAW image in darktable will respect the system colour
> management, whereas the image viewer may not (depends on
> the viewer).
>
> Because the RAW development process the camera uses is proprietary, we
> can't know what it has done. This makes
> "matching" a RAW to the JPG preview difficult (and kind of pointless
> anyway; if you want to do that, just use the Canon
> software or use the "RAW image processing" menu option in the camera to
> convert the RAW to JPG).
>
> Or you could try doing something like:
> * increase global contrast slightly using the "contrast brightness
> saturation" module (basic group) or maybe increase
> the black point in the "exposure" module (basic group)
> * increase local contrast using the "local contrast" module (tone group)
> * have a play with the "sharpen" module (correction group)
> * have a play with the upper spline in the luma tab of the "equalizer"
> (correction group) A slight hump in the
> right-hand 1/3 of the spline is probably a good place to start.
> * have a look at the "white balance" module (basic group), try some of the
> presets (looks like tungsten might be
> appropriate) but if they don't work then you can try the sliders.
>
> But like I said, your aim should be to make an image that's /better/ than
> the embedded JPG, not the same. Otherwise you
> might as well shoot JPG (or RAW+JPG).
>
> Regards,
>
> Rob
>
>
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--
met vriendelijke groet / kind regards Ger
mailto:[email protected] website: www.gersiemerink.net
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