[Digikam-devel] Rotation issue in image view

[Marcel Wiesweg]

Some more information:

> a) Correct in thumbnail, correct in preview, correct in full version
> 	6057_009.cr2
> 	DSC0028.arw
> 	DSC_2162.nef
> 	L1000877.DNG
> 	k10d.dng

The MRW files have three sources of information:
TIFF tag ORIENTATION: This is where dcraw gets its information from
Exif Rotation: Seems to be set according to tiff tag
Minolta Makernote Cs5D Rotation: Used libkexiv2, used by digikam for preview 
and thumbnail

> 	MINOLTA-DYNAX5D-01.MRW
This image has all three values set correctly

> b) Correct in thumbnail, correct in preview, _wrong_ in full version
> 	MINOLTA-DYNAX5D-03.MRW
> 	MINOLTA-DYNAX5D-04.MRW
These have only the makernote set.


The CRW files have two different sources:
The CRW header
The Exif tag

> c) Wrong (180°) in thumbnail, wrong (180°) in preview, correct in full
> version Canon-G5.crw
Dcraw gets the (correct) information from the CRW header.
The preview and thumbnail loader get the information from the Exif tag, which 
is "right, top" and wrong by 180°.

> d) Wrong in thumbnail, wrong in preview, wrong in full version
> 	DSCF0019.raf
> 	S9500-vert.raf
> 	S9600-vert.raf