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Author Topic: White balance of UV-photos in Lightroom 4  (Read 918 times)

melibokusrunner

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White balance of UV-photos in Lightroom 4
« on: May 04, 2013, 04:40:04 PM »

I found out recently, that Lightroom fails to reproduce in-camera white-balance that I have set for UV-photos.

This can be best illustrated by showing the in-camera JPG (1) and the RAW-file (2) after opening it in LR4. Other RAW converters like UFRAW/GIMP or Silkypix get the WB correct, but I would love to keep my workflow that is currently based on LR.

Camera: Panasonic Lumix G1, modified for UV and IR photography.

more info on this topic can be found here:

http://www.ultravioletphotography.com/content/index.php?/topic/238-white-balance-wb-and-raw-development/

Any hint about a feasible remedy is highly appreciated.

Best wishes and thanks in advance,

Nico
bee-colours.blogspot.com



about image No. 2: This is how LR4 renders the file with the WB setting “as shot” – that is more than slightly off …
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Schewe

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Re: White balance of UV-photos in Lightroom 4
« Reply #1 on: May 04, 2013, 05:08:25 PM »

Since ACR & LR are designed to assume a normal sensor response with an IR cutoff built in, shooting without an IR cutoff scrambles the normal white balance when using the DNG Profiles used by ACR/LR. The only remedy is to edit a DNG Profile using the free DNG Profile Editor from Adobe Labs. The user guide for DNG Profile Editor has a tutorial for editing a profile for use with IR modified cameras. It's a 3.93MB PDF.
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melibokusrunner

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Re: White balance of UV-photos in Lightroom 4
« Reply #2 on: May 05, 2013, 05:45:14 AM »

Thanks, Jeff!
I'll try that and let you know how it works.
Best, Nico
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melibokusrunner

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Re: White balance of UV-photos in Lightroom 4
« Reply #3 on: May 05, 2013, 02:10:41 PM »

I have played with DNG editor. However, I don’t think that this is the solution that I was looking for. Maybe it’s feasible to create a suitable profile, but it seems to be a quite tedious process. I will probably use another RAW converter that simply imports the camera settings without applying some annoying changes during development.
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