[Digikam-users] Idea for getting in camera quality jpeg conversions... was Re: Building a better raw conversion tool for digiKam ?

Linuxguy123 linuxguy123 at gmail.com
Thu Dec 24 15:11:42 GMT 2009

On Thu, 2009-12-24 at 09:59 +0100, Milan Knížek wrote:
> Linuxguy123 píše v St 23. 12. 2009 v 19:51 -0700:
> > I did a lot of reading and this might work.  But generating color
> > profiles using an IT8.7 target and using a raw converter that supports
> > the use of color profiles is the ultimate answer. 
> Do not get mistaken - using the colorimetric approach only will result
> in good (hopefully) colours, which is not what the camera does (convert
> colours with preference of skin-tones, green, etc., adjust tone curve,
> saturation). A photographer usually wants to get pleasing (good looking)
> images, not high-fidelity images.

I am fully aware of this.  Canon ships several profiles with DPP to
allow for specific types of image enhancement. (Ie Portrait, Landscape,
Vivid, etc.)

I intend to generate my profile and then compare it to the Canon
profiles and edit accordingly.

One of the things that profile generation allows us to do is build
profiles based on different types of lighting.

> The ICC profile will do only the first step and unless you use an ICC
> profile editor to store the manual adjustments in the profile, the other
> corrections are to be done in image editor manually...


> With UFRaw, you have better chances for automation, since you can adjust
> linear curve (before gamma is applied), lightness curve (in L*a*b* space
> after gamma/ICC profile is applied), saturation and keep these settings
> for later use.


> However, you still do not have the possibility of unique colour
> adjustments (e.g. make skin tones warmer and do not affect too much the
> other colours).

That is what different profiles are for. 

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