On lundi 29 janvier 2018 10:44:11 CET ternaryd wrote:
> Hi,
>
> I'm trying to adjust a larger set of images
> which have a rather high dynamic. Trying to
> avoid HDR, I've used the exposure module to
> move EV and black such that there is no more
> over/under exposure, but midtones get very
> dark. The idea was to use a parametric mask,
> protecting the bright parts of the image and
> raise EV of the rest an a second instance.
>
> The problem is that often the range of high
> luminosity is very narrow, sometimes even less
> than 1 unit. As right-click doesn't open the
> normal darktable interface for adjustments, I
> find it extremely difficult to adjust the
> markers of the sliders at this position.
> Sometimes it slips down to zero, overlapping
> both markers. Additionally, for having those
> markers that tight, it is often impossible to
> establish a feathering zone, leading to very
> visible artifacts for instance at the border
> between an out-of-focus roof and the sky.
>
> Is that really that hard or am I doing it
> wrong? Is there another method (besides HDR) to
> adjust such images?
>
> Thanks,
>
> Cris
> ____________________________________________________________________________
> darktable user mailing list
> to unsubscribe send a mail to [email protected]
In such cases, I tend to use 2 instances of the exposition module, one for
high-lights, a second for shadows. This keeps the parametric masks simple.
And don't forget you can easily invert a mask (e.g. to protect highlights,
make a mask that only affects, or shows in yellow, the zones you want to
target, then invert it)
Another way to reduce the dynamic range is using the 'base curve' module:
- select a base curve preset that's not too aggressive towards the highlights
('Leica' is the one I often use, the default 'Sony' tends to clip the
highlights too much for my taste),
- then use the 'fusion' option.
Remco.
____________________________________________________________________________
darktable user mailing list
to unsubscribe send a mail to [email protected]
