Need help exporting TIFF to Capture NX2

Software RawTherapee
13

Well, RT lacks local adjustments and Gimp can’t handle 16bit… for now :slight_smile:. Also, I know Capture very well.

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You should try the gimp 2.9 builds, I assume you’re on windows you can get one from Partha I think. It handles up to 32 bits.

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I really don’t need 32 bits, I’d say it would be nice to have 12/14. Anyway I’ve tried to get the 2.9 for Windows, I was interested but couldn’t find it yet.

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The GIMP 2.9 Windows binary download absolutely sucks, it’s as if the intention was that nobody finds it. Once someone finds their way to the official-but-unofficial download page Gimp - Nightly Builds - Dark Refraction they find the folder empty…

@patdavid could that be improved? Can we help?

1 Like
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http://partha.com in the Downloads sidebar, there it is!

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That was exactly my thought

Thanks! I will try.

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I know that darkrefraction had been down sporadically (not sure if it’s related to build errors or infrastructure problems). I’m looking into it now.

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So I downloaded Gimp 2.9.5 (@paperdigits Thanks!), now I can export from RT as tiff 16 bits, open it in Gimp, export it from Gimp as tiff 16 bits, open it in Capture NX2. It’s not so straightforward, but at least I can mantain a 16 bits workflow.
Of course in time I will learn Gimp (I am still learning RT :slight_smile:). What I particularly like in RT is the ability to start from scratch (neutral profile), what I miss is the ability to display only the pixels of part of the hystogram.

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Would you say this tiff incompatibility is a bug in RT? Should it be reported?

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@geldo could you try all four of these images and reply which ones open in NX2 and which ones don’t?
https://filebin.net/ml2i83ekfqdfht1g

Would be great if you or someone could also try PS.

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@Morgan_Hardwood None of them open in NX2, but they are ok for Lightroom 4.3

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@Morgan_Hardwood I’ve found this:

Could it be the alpha channel?

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Capture NX was first released in July 2006. Capture NX 2 was released in June 2008. (…)
In July 2014 Nikon has released a new software Capture NX-D and desupported Capture NX 2.

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NX2 is a totally different beast than NX-D…

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… and they won’t open in NX-D also :slight_smile:

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RT does not support alpha channel.

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So what else could be the difference between say RT and Gimp tiffs? NX opens the latters

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@geldo could you save blue_horse_8_uncompressed.tif in GIMP (uncompressed 8-bit), verify that NX-D opens it, and upload it into the same filebin I used above for me please?

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Done. Both NX2 and NX-D open it.

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Differences between the two images:

  • Endianness, RT=MSB, GIMP=LSB
  • rows-per-strip, RT=8, GIMP=128
  • GIMP version has Subfile Type: (0 = 0x0), Sample Format: unsigned integer
  • tiffinfo -D shows that both have a UserComment, but the hex contents of it vary between the two.
  • identify -verbose shows that the GIMP version has an empty comment field while the RT version does not show a comment field.

If anyone wants to help, re-save this image using other software and upload it for @geldo to try, maybe we can find which differing element is the culprit: https://filebin.net/ml2i83ekfqdfht1g/blue_horse_8_uncompressed.tif
Having found the culprit, we’d have to decide whether we really want to change it. I see no signs of the TIFF file being corrupt or wrong, looks more like a Capture NX* problem - i.e. report it to Nikon.