Bug 244097

Summary:	When importing .NEF files, if highlights are "rebuild", "auto-brightness" has no effect
Product:	[Applications] digikam	Reporter:	Cristian Tibirna <tibirna>
Component:	Plugin-RawImport-Native	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	caulier.gilles
Priority:	NOR
Version:	4.0.0
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed In:	4.11.0
Sentry Crash Report:
Attachments:	digikam log for raw import with not functioning autobrightness

Description Cristian Tibirna 2010-07-10 04:21:21 UTC

Version:           1.3.0 (using KDE 4.4.4) 
OS:                Linux

The title says it all. I now have digikam 1.2 in kde 4.4.5 (compiled by openSUSE) (I tried 1.3, but it misses some library symbol and thus doesn't start).

The observed problem is that enabling auto-brightness (which is very useful with 16 bit raw files) does do auto-regulation of brightness ONLY if highlight overblowing is set on anything else but "Rebuild". If rebuild is chosen, no matter what level, images are imported darkened, brightness is not auto-regulated.

Thanks for an excellent product!

Reproducible: Always

Comment 1 caulier.gilles 2010-07-10 08:00:20 UTC

1/ give me a NEF file to test there.

2/ give me the libkdcraw and libraw version that you use. go to Help/Component info for details

3/ enable debug trace, running kdebugdialog and selecting digikam and libkdcraw from the list. Run digikam from a console, process your NEF file, and copy and paste all messages there

Gilles Caulier

Comment 2 Cristian Tibirna 2010-07-10 23:09:52 UTC

Thanks for replying.

1) see http://cristian.tibirna.org/sandbox/D3C_1196.NEF (file is too big for the bug system)

2) 
digiKam version 1.2.0
LibKDE: 4.4.5 (KDE 4.4.5) "release 270"
LibKdcraw: 1.0.0
LibQt: 4.6.3
LibRaw: 0.8.5
LibKipi: 1.0.0

3) see next attachment.

Comment 3 Cristian Tibirna 2010-07-10 23:11:21 UTC

Created attachment 48757 [details]
digikam log for raw import with not functioning autobrightness

Comment 4 caulier.gilles 2011-12-15 13:09:59 UTC

Cristian,

This file still valid using digiKam 2.x serie ?

Gilles Caulier

Comment 5 Cristian Tibirna 2011-12-15 14:29:29 UTC

Yes :-( And the problem also exists for "highlights=Unclip". Only "highlights=blend" and "highlights=solid white" allow for "auto brightness" to work as expected.

The .NEF attached is still useable for testing. 

Currently, my local version of digikam is 2.3.0, libkdraw is 2.0 and libraw is 0.13.5.

Thank you!

Comment 6 caulier.gilles 2013-12-09 23:05:29 UTC

Cristian,

A lots of change have been done into libkdcraw and libraw published with digiKam 3;x serie. It will be nice to check if problem is reproducible with last digiKam 3.5.0.

Thanks in advance

Gilles Caulier

Comment 7 Cristian Tibirna 2014-01-02 16:58:49 UTC

Gilles, the problem is still reproducible with digikam-4 beta 1. Exactly same details (as above).

Comment 8 caulier.gilles 2014-08-29 22:42:34 UTC

Christian,

I recommend to try to use last digiKam 4.2.0 AND last libraw 0.16.0 to see if bug still reproducible...

Gilles Caulier

Comment 9 caulier.gilles 2015-05-15 22:15:14 UTC

Christian,

What's new about this file using digiKam 4.10.0 and Libraw 0.16.x ?

Gilles Caulier

Comment 10 Cristian Tibirna 2015-05-16 13:03:49 UTC

Thanks for the heads up.

The reconstruction is now correct with all combinations of "highlights" and "auto brightness" (on or off).

Thanks a lot for the great work.