P: SDK: photo:getDevelopSettings() sometimes returns nil for Temperature and Tint

[John R Ellis]

photo:getDevelopSettings() sometimes returns nil for Temperature and Tint.   Tested in LR 12.2 and 10.4 on Mac OS 12.6.1.

To reproduce:

1. Download and unzip this catalog folder ("Temperature"):

https://www.dropbox.com/s/z527z9to4ie46vx/Temperature.2023.03.02.zip?dl=0

2. Copy the file "get-temperature.lua" from the catalog folder to the User Scripts folder.

3. Open the Temperature catalog.

4. Select the one photo and go to Develop.

5. Go to Library and do Scripts > get-temperature. Observe the temperature and tint are correctly displayed:

6. Do Quick Develop > Reset All.

7. Do Scripts > get-temperature and observe that temperature and tint are incorrectly nil:

[C.Cella]

@John R Ellis 

Apologies John.

I have now check the DNGs effected in my test catalog and they all originate form a JPEG or a non RAW file which explains the lack of Temperature and Tint.

So no actual RAW file is affected.

.

[John R Ellis]

This is all fairly new to me too. I hadn't really looked into DNGs much until Denoise and the recent use of JPEG XL compression instead of JPEG.

[Rikk Flohr: Photography]

Marking fixed as requested in the thread.