5 Replies Latest reply: Jun 14, 2013 8:59 AM by Chris Cox

CS6 64-bit HDR Pro producing corrupted merge

nealeh Jun 13, 2013 3:33 PM

Running CS6 Basic on W7-64bit. I'm not a frequent user of CS6, mostly Photoshop Elements does all I need, but I've been reworking the CS5 Classroom in a Book exercises to refresh my CS6 knowledge.

I've reached the exercise (page 139) where multiple images of a model are merged using File> Automate> Merge to HDR Pro... but getting a weird result in CS6 64-bit. I've tried the two suggestions seen in this forum (resetting preferences, ensuring images are displayed in tabs) but neither has worked. My graphics drivers are up to date as are all Windows updates.

If I run the same images through Merge to HDR Pro in the 32-bit version of CS6 its perfect.

Here is what I'm getting in 64-bit - any suggestions?

Cheers,
--
Neale
Insanity is hereditary, you get it from your children.

1. Re: CS6 64-bit HDR Pro producing corrupted merge

DrStrik9 Jun 13, 2013 4:45 PM (in response to nealeh)

What bit depth per channel is the image you posted? (32, 16, 8)?

On my (64-bit) machine, 32-bit HDR images look wonky, but 16- and 8-bits per channel both look fine. (For HDR imagery, I usually retouch in 16-bit.) I suspect this is because on a 24-bit monitor (8-bits per channel), 32-bits per channel is outside of displayable range.
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2. Re: CS6 64-bit HDR Pro producing corrupted merge

Chris Cox Jun 13, 2013 6:43 PM (in response to nealeh)

That looks like 3 photos at almost identical exposures. You really need some variation (even a quarter stop plus/minus seems to work) in exposure to do an HDR merge.
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3. Re: CS6 64-bit HDR Pro producing corrupted merge

nealeh Jun 14, 2013 5:31 AM (in response to DrStrik9)

Camera Raw and CS6 both report the source images as 8-bit. The merged photo as 16-bit. My display is set to 32-bit. Plus the merge looks fine if done with the 32-bit version of CS6. Whatever is going wrong is only with HDR Merge in the 64-bit version.

Cheers,
--
Neale
Insanity is hereditary, you get it from your children.
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4. Re: CS6 64-bit HDR Pro producing corrupted merge

nealeh Jun 14, 2013 5:34 AM (in response to Chris Cox)

The photos are those supplied by Adobe on the DVD accompanying the Classroom in a Book book. There are differences, shown better in this screenshot of the sources:

Cheers,
--
Neale
Insanity is hereditary, you get it from your children.
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5. Re: CS6 64-bit HDR Pro producing corrupted merge

Chris Cox Jun 14, 2013 8:59 AM (in response to nealeh)

But the readout in MergeToHDR shows the exposures as 0.0, 0.0, and -0.03 EV.

Hmm, have you installed all the ACR updates?
There was a bug a while back where ACR was trying to auto-correct images, despite MergeToHDR telling it not to.
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CS6 64-bit HDR Pro producing corrupted merge

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