0.21 Wrong rotation when Exif orientation is set
Posted: Fri Dec 11, 2009 12:22 am
full title:
Wrong rotation when Exif orientation is set and rotation image based on EXIF orientation unchecked
I have chosen to have the images displayed without honoring the EXIF orientation tag (Settings: general/general/rotate image based on EXIF orientation = uncheck), because other programs that I use can't deal with it.
Let's say I have made a portrait image which is stored as landscape with the sky on its left plus the EXIF orientation tag set to "right-top (6)".
To make it look good, I want to rotate it 90° clockwise, I click on the corresponding button.
Problem: the result is a 180° rotation: landscape image with the sky is on the right, but EXIF tag set to "top-left (1)"
Then I can click on the rotate CCW button to finally get a portrait image with sky on top (works OK because EXIF tag=1)
I just made some tests with the "rotate image based on EXIF orientation" setting checked: it woks correctly, portrait images go landscape in the expected direction and the EXIF orientation is cleard.
In fact we get the same result as before (landscape images).
So I guess that the rotation buttons act as if "rotation image based on EXIF orientation" was always set.
By the way, great thanks for reviving XnView for Linux!
Wrong rotation when Exif orientation is set and rotation image based on EXIF orientation unchecked
I have chosen to have the images displayed without honoring the EXIF orientation tag (Settings: general/general/rotate image based on EXIF orientation = uncheck), because other programs that I use can't deal with it.
Let's say I have made a portrait image which is stored as landscape with the sky on its left plus the EXIF orientation tag set to "right-top (6)".
To make it look good, I want to rotate it 90° clockwise, I click on the corresponding button.
Problem: the result is a 180° rotation: landscape image with the sky is on the right, but EXIF tag set to "top-left (1)"
Then I can click on the rotate CCW button to finally get a portrait image with sky on top (works OK because EXIF tag=1)
I just made some tests with the "rotate image based on EXIF orientation" setting checked: it woks correctly, portrait images go landscape in the expected direction and the EXIF orientation is cleard.
In fact we get the same result as before (landscape images).
So I guess that the rotation buttons act as if "rotation image based on EXIF orientation" was always set.
By the way, great thanks for reviving XnView for Linux!