A slightly different question from me - friend has an iPhone 15 and we’d like to be able to get DNGs from the camera so that on occasion I can edit photos from the phone.
It seems only the 15 Pro or Max have built in ProRAW support, so need a third party app. FOSS support for ProRAW is sketchy anyway.
There seems to be plenty of apps available, but I thought the community here would probably useful input!
Not free, but I’ve found Camac to be the best by a decent amount. Project Indigo is free and great, but it’s Adobe 
Thanks, that’s useful!
Do you know what the cost of Camac is? The App store listing just says free with in app purchases…
I didn’t realise Project Indigo did proper DNGs - for some reason I thought it was all about AI driven computational work. (Not to discount that, just not the emphasis of my search)
There is Adobe DNG converter. I tried it using Wine in Linux.
Personally I was disappointed with my results. Images started off very dark and editing was “touchy.”
A while ago it occurred to me that there might be some FOSS tools for doing the conversion (djxl and cjxl). Apple uses the JXL specification for the “raw” data inside the DNG.
After struggling for some time, I turned to Claude to help with the task. It took several rounds. I think the image is stored in several tiles, which need to be assembled into a single image. The code is in python and I run it as a .sh executable.
After all of that, images looked and worked just like I had seen with Adobe DNG converter. As younger folks might say, “Meh.” I much prefer editing photos from my dedicated digital cameras.
Note: made some edits.
Thanks!
I have used the DNG converter occasionally for other files.
The thing is, the iPhone camera app won’t produce anything but jpgs or HIEFs - only the Pro or Max can produce ProRAW.
Hence the need for a camera app 
What kind of files were you converting?
Apple ProRAW DNG’s.
And Claude missed DNGLab?
FYI to see the jpeg preview in dt, you can change the file extension from ,DNG to .jxl. Images look great but there isn’t much you can do with them.
Oh, yes indeed! Thx.
I’m not recommending my method. Mostly pointing out that Adobe DNG converter seems to do the right thing. I had been wondering.
Ah, yes, I forgot. I was initially excited about ProRaw so I picked up a Pro model. Now I hardly use it (ProRaw format, that is).
For heic/heif, GIMP might work.
I believe about 30 AUD…It really is very good and the developer’s responsive. The free version has a 30 second limit between each shot which is worth checking out beforehand.
Project Indigo does create DNGs, but you can’t bypass the computational processing