Conversion from RAW to TIFF, PNG, or JPEG is darker

Discussions on NConvert - the command line tool for image conversion and manipulation

Moderators: XnTriq, helmut, xnview

Post Reply
jimoe
Posts: 3
Joined: Tue Jul 09, 2013 12:47 am

Conversion from RAW to TIFF, PNG, or JPEG is darker

Post by jimoe »

nikon d700
nconvert 6.17

Using the command line

Code: Select all

nconvert  -high_res -raw_autobalance -raw_camerabalance -raw_autobright -out jpeg -o ../%.jpg *.nef
produces output that is noticeably darker than the original NEF image. Looking at the histograms confirms this since the overall curves are the same, only compressed toward the dark side.

Other than the "-raw_" options, is there an automated way to get the correct brightness?
User avatar
oops66
XnThusiast
Posts: 2005
Joined: Tue Jul 17, 2007 1:17 am
Location: France

Re: Conversion from RAW to TIFF, PNG, or JPEG is darker

Post by oops66 »

Hello,
... You can try with an icc profile, for you ... NikonD700.icc ...
http://ufraw.sourceforge.net/Colors.html
XnViewMP Linux X64 - Debian - X64
jimoe
Posts: 3
Joined: Tue Jul 09, 2013 12:47 am

Re: Conversion from RAW to TIFF, PNG, or JPEG is darker

Post by jimoe »

I tried using "-icc_in" with the d700 profile available from the site you referenced. All it seemed to do was excessively increase the color saturation without any brightness benefit.

The "-icc" option made no difference.
User avatar
oops66
XnThusiast
Posts: 2005
Joined: Tue Jul 17, 2007 1:17 am
Location: France

Re: Conversion from RAW to TIFF, PNG, or JPEG is darker

Post by oops66 »

...No luck ... but you can try some others icc ;-)
XnViewMP Linux X64 - Debian - X64
Post Reply