[Digikam-users] Re: Processing RAW images to get to the look of the jpg preview

[Remco Viëtor]

on Friday 24 June 2011, Sven Burmeister wrote: 
> Am Donnerstag, 23. Juni 2011, 11:48:20 schrieb Martin:
> > I don't think your problem is gamma only. The gamma curve only depends
> > on the colour model you use to view the picture (sRBG, Adobe RBG,
> > Apple RGB ...). It should almost never be necessary to adjust this by
> > hand. But I have no clue what the problem of digikam is here.
> 
> Could you please try the digikam demosaicing tool with highlights set to 
> "blend" or "rebuild". I tried to avoid the gamma setting (1,7) but while it 
> works without gamma and adjusting the luminosity curve for most parts of the 
> picture, areas that are almost black (dark blue) remain far too dark. If I 
use 
> gamma it works better. So I wonder how it could be done without.
> 

Iirc, Digikam (at least in certain modes) develops the RAW files with a linear 
curve (i.e. gamma=1.0), like dcraw in its default settings. So you will have 
to set gamma to the value you want (2.2 usually, except for old Macs, that 
used 1.8). Luckily, the values you set is remembered for next use.

Remco