Am Mittwoch, 4. Dezember 2013, 11:37:44 schrieb Paul Glad Mihai:
> Hi there,

Hi.

> In order to get nicer contrasts I started playing around with the Lab
> curves (Re: Marugulis' - Photoshop Lab Color, i.e. make the a and b
> slopes steeper to pull colors apart). I noticed this works great but not
> on all photos. Some just punch the blues, or greens or yellows and it
> doesn't look that great. So I reverted to velvia.
> 
> Now I heard somewhere that one can apply multiple instances of velvia
> and use blending modes to achieve very nice effects. Can someone give me
> some tips on using these? I would really appreciate that.
> 
> Further, can these tricks also be used on the vibrance?

I will leave this to be answered by people actually making use of multi 
instance for these things ...

> Thanks for your time.
> 
> Glad
> 
> P.S. Is there no way to donate towards this project?

... but I can answer this: No, you can't donate at the moment. The reason is 
as boring as simple: taxation. There is no formal organization behind 
darktable so it's not that simple to collect money. There are plans to change 
that but no concrete steps have been taken yet.
If you want to do something for us you can donate to the LGM Pledgie. The 
money collected there will be used to pay developer's travel costs to meet in 
Leipzig next April so we will benefit from that, too. I will write something on 
the website about that soonish.

https://pledgie.com/campaigns/22927

Tobias

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