Thanks ... that answers my question
On 2019-01-31 12:32 a.m., Archie Macintosh wrote:
On Thu, 31 Jan 2019 at 07:59, Archie Macintosh <[email protected]> wrote:
On Wed, 30 Jan 2019 at 23:30, David Vincent-Jones <[email protected]> wrote:
Can somebody explain why (on some occasions only) the 'black relative
exposure' slider, sets itself to a maximum value when using the 'auto
tune levels'. The value appears to be totally incorrect and manual
correction needs to be made.
David
Are you using Fuji RAF files? Aurélian Pierre says in his blog post about
Filmic that what you describe can happen with RAF files because of an issue
with demosaicing them. He advises manual adjustment.
mac
This is what Aurélian says about this 'known issue':
"In noisy pictures, or in pictures that suffer from poor demosaicing
(RAW from X-trans sensors), the black level will often be detected at
-16 EV (minimum of the range). You need to correct that manually to
obtain realistic values."
See:
https://eng.aurelienpierre.com/2018/11/30/filmic-darktable-and-the-quest-of-the-hdr-tone-mapping/#known_issues
____________________________________________________________________________
darktable user mailing list
to unsubscribe send a mail to [email protected]
____________________________________________________________________________
darktable user mailing list
to unsubscribe send a mail to [email protected]
