Image Rotation

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paulmist
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Joined: Tue Oct 11, 2016 2:28 pm

Image Rotation

Postby paulmist » Wed Oct 12, 2016 8:51 pm

    <--// Moderator's note: This topic has been split off from “Poor JPEG Quality”. //-->

So, new problem.

Image rotation. It appears that a percentage of my portrait format images are being flipped - as if the EXIF data has been inverted on converting to JPEG.

Again, anything I'm missing?

Rotate images according to EXIF is checked.

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XnTriq
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Re: Poor JPEG Quality

Postby XnTriq » Wed Oct 12, 2016 9:15 pm

I've also had cases where the camera's sensor assigned an incorrect value of the EXIF orientation tag.
You'll have to rotate these images manually with XnView's lossless JPEG transformation commands.
On occation, I've also used JPEG Lossless Rotator, which uses the same code base as XnView and has served me well.


paulmist
Posts: 4
Joined: Tue Oct 11, 2016 2:28 pm

Re: Image Rotation

Postby paulmist » Thu Oct 13, 2016 7:24 am

Firstly, apologies for the split thread.

Regarding the false rotation, what's frustrating is that the DNG appears correctly, while the JPEG it creates after conversion appears inverted.

Why would this happen?

Is there a way to assure it's converted correctly?

I don't really want to manually correct 3000+ images, but if I do need to can I filter to see portrait images only in XnView?

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XnTriq
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Re: Image Rotation

Postby XnTriq » Sat Oct 15, 2016 10:00 am

Sorry for the delay. Could you please share a sample file that's not converted properly?

paulmist wrote:Firstly, apologies for the split thread.

No problem (-:


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