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Can't change 32 bit .tif images from DSS to 16 bit in Photoshop

astrophotography
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#1 Donaldo

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Posted 05 August 2020 - 05:07 PM

The .tif images created by DSS will open in Photoshop, but when trying to change them from 32 bit to 16, the program bombs and closes the program. I don't have trouble doing the change from 32 to 16 with .tif files generated by DSS before ~07/22/20. This was about the same time Windows did an update that screwed up my Windows Live Mail program. Can receive messages but they can't display body of message. Cannot send messages.

 

Uninstalled DSS and Photoshop and reinstalled. No change.

 

Anybody run across anything like this? Appreciate any help I can get.

 

Donaldo-



#2 idclimber

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Posted 05 August 2020 - 07:02 PM

I believe you need to do this in 12bit. When I try with 16 or higher the images are messed up. 



#3 idclimber

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Posted 05 August 2020 - 07:10 PM

I just doubled checked my notes on this. It is 32bit that photoshop can't open. I had the same problem a few weeks ago. I believe you have to drop the resolution to 16. 



#4 ImNewHere

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Posted 05 August 2020 - 07:53 PM

Open the image back up in DSS, then his "save as" then rename it and save it as a 16 bit tif.



#5 OldManSky

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Posted 05 August 2020 - 11:06 PM

Hmm.  Not sure about the above.

My Photoshop (CC, 2020) can open the 32-bit TIFF files right out of DSS.

And convert them to 16-bit with no issues.

 

I've got the latest DSS and Windows just updated 2 days ago...


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#6 idclimber

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Posted 05 August 2020 - 11:37 PM

I also have PS 2020. It definitely chokes on the 32bit Tiff files that I created in PixInsight. 



#7 OldManSky

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Posted 05 August 2020 - 11:44 PM

I can open PixInsight 32-bit TIFFs no problem as well.

I have 64GB memory...are you guys running on low-memory machines?


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#8 idclimber

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Posted 06 August 2020 - 12:42 AM

An almost brand new MacBook Pro with 32gb ram. 6 core i7 processor.

 

I have tried 64bit and 32bit. The former opens in greyscale. The latter opens and is all washed out from the version have in PixInsight. If I use 16bit it opens as it should. The source is a .xsif multichannel LHaSIIOIII but I also had trouble with a LRGB file a couple weeks ago. I am not using compression. 




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