P: Anamorphic Lens Support (De-squeeze)

I much appreciate the workaround tip. I think you hit the nail on the head by calling it the Pixel Aspect Ratio, because that's really what it is. Used to deal with that all the time when working with standard-definition video's .9 pixel aspect ratios in Premiere and After Effects. Hopefully Adobe adds similar functionality so we I can keep my .r3d files in their native format without converting to DNG or making new files in a roundabout trip to Photoshop.

After some searching I found a good workaround for this:

I only tried it on Windows, but you should be able to do it in a similiar fashion on Mac:

1. Download exiftool (https://exiftool.org/)

2. On Windows you have to extract it, rename the .exe to "exiftool.exe" and place it in  "C:/Windows"

3. Import your anamorphic images to lightroom as "DNG" (!important!).

4. Open the folder with your images and create a new textfile.

5. Paste this in the new textfile:

for %%f in (*.*) do exiftool -DefaultScale="1.33 1.0" -overwrite_original %%f

This command will change the pixel aspect ratio of all images in the folder it is executed in. In this example 1.33x was used, if you have another aspect ratio you can change it.
For example for 2x change it to -DefaultScale="1.33 1.0" ot -DefaultScale="2.0 1.0"

6. Change the file ending of the textfile to ".bat", for example "desqueeze.bat".

7. Execute the batfile in the folder with your images.

8. Restart Lightroom and your images should appear in the correct aspect ratio. At least in the Develop-Tab, for some reasen they are shown in the original aspect ratio in the library.

You can use the .bat file in any folder you want so you can save it for later

Would love to see this feature aswell