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Subject Topic: HDR Solution Post Reply Post New Topic
Message posted by skyEffect on October-21-2012 at 12:01am
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skyEffect
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United States
October-20-2012
2 Posts
Hey Everyone,

This is my first post as I've just started using Panoweaver this last week.

I've been trying to do HDR images of some indoor panoramas. I've followed the instructions that EasyPano has for HDR images. I've shot the room three times at three different exposure levels. I import each exposure set into Panoweave, stitch an exposure set together, then save the panorama. I do this for all three exposures. I then take each of those panoramas and import them into Panoweaver HDR. I click the 'Create HDR Image' icon and it creates an image but the panoramas aren't lining up so it has all this 'ghosting' going on from the different exposure layers.

I noticed that as I created and exported each of the panoramas Panoweaver wasn't stitching them the same way even though every exposure set was shot at the same degree intervals. Consequently the exposure layers don't line up exactly in Panoweaver HDR. Am I doing something wrong here? I thought Panoweaver HDR would line up the different exposure layers automatically.

FYI: I shoot in RAW and import all images into Panoweaver as RAW.

Any help or advice would be appreciated.

Message posted by smooth on October-21-2012 at 5:40am
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smooth
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November-23-2002
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Couple of tips:

You should never stitch unprocessed RAW images.
You should process/develop your RAW files to 16 Bit .tif images.
You should HDR individual shots before stitching, saving each as 16 Bit .tif

Good luck.

Regards, Smooth

Message posted by celavey on October-21-2012 at 10:48pm
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celavey
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October-16-2012
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Can you share why it has to be saved by 16bit?

Message posted by smooth on October-22-2012 at 12:19am
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smooth
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November-23-2002
5401 Posts
Whilst the image is still in 16 Bit format you can still manipulate a wider colour gamut. Gradients are smoother and more detail is preserved.

Please read: http://www.photoshopessentials.com/essentials/16-bit/

In the end the images will be shown via Tourweaver or Panoweaver as 8 bit .jpg but this should always be the very final step.

If nothing else it helps to prevent colour banding. This is normally a problem in panoramas with blue sky shots. The gradual transition is not smooth and looks horrible. Editing in 16 bit helps prevent this effect from happening.

Regards, Smooth

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