IQ4 and iXG Phase One Profiles Not Available

Feature Requests
1

Hey Nate, can you create some profiles for the IQ4 and iXG Phase One cameras? I see the IQ4 profiles in the folder but Lightroom is not recognizing them so I assume they’re actually marked as something else in the EXIF. The new iXG back is specifically for reproduction and negative scanning, primarily with Capture One Cultural Heritage, but would be great to be able to use NLP.

Here’s the files:

Thanks,
Xander

2

For reference, the NLP inversion currently looks really bad. The C1CH inversion is great, and this is a wonderful file to throw a curve on in PS to get very smooth tones and pleasing colors:

3

Hi Nate
This would be great if it can be explored - Creating a Phase One pre-set for the Cultural heritage digitization community. As Xander mentioned, many institutions are using a IXH or IXG Phase one back, with a 120mm + extension tubes.
Having a preset for this type of input device would be awesome! As Phase One Raw files are not supported by Adobe (only Capture One) I have to import calibrated Tiff’s into NLP. Would a custom preset help increase the quality?
I have 3 It8 calibration slides (Velvia, Provia and Ektachrome) with the validation values. I could send tiff files of these to assist in creating a LUT?
Anyway just reaching out,
Cheers Ben

4

Just to follow up on this, part of the issue is that Lightroom itself seems to have a difficult time correctly handling the raw files of Phase One cameras. I suspect there is some kind of integration with Phase One cameras that Adobe may not be able to access.

In any case, you can use Capture One for the raw demosaicing, but then process it in Negative Lab Pro, here is how to do that:

  1. Open the raw files in Capture One
  2. Under the “Base Characteristics” set the ICC profile to “(your camera model)… generic” and the “Curve” to “Linear Response”
  3. Adjust the white balance in Capture One using their white picker off the film border
  4. Export it as a 16-bit TIFF with no other processing.
  5. Then import that TIFF in Lightroom Classic, and convert with Negative Lab Pro (don’t white balance it again in Lightroom, and do not use the TIFF Prep Utility… it should be ready to convert as it is).

Then, in Negative Lab Pro, choose the preset: “NLP - neutral” as your starting point. This should be a good, neutral starting point for further refining your settings.

I’ve actually seen some really great results following this method, so I’m curious to hear how it goes for you.

-Nate

5

Hi Nate.
Great advise.
We currently have a custom input .icc, so I will continue to use this as it is specific to our DT Photon light box.
For our “Preservation” captures I will continue to use the Linear curve, but when creating the access Jpgs (ie conversions) I will clone a variant of the Preservation Tiff captures and in C1:

  1. Set white balance for the roll of film (white picker on film border)
  2. Change curve to linear response
  3. Follow the rest of your method.

Currently after NLP conversion I would do this to set a as neutral base:

Tone Profile – Change from Lab Standard to Linear
Exposure = -6
Contrast = 1
Whites = -10
Blacks = 1
Shadows, M = 1
HSL Change from Lab to None
Saturation - change from 5 to 4
Sharpen - change from Leave as Set to None

I literally have thousands and thousands of negatives to convert, and because I am not the photographer/creator of these negs and have no real attachment to the images, I need to be able to create accurate & consistent conversions (as much as possible) , for the institutions who own these collections.

I will keep you posted on these tips
Thanks again
Ben