> I feel like PNG was a really bad format back when hard drives were 100GB
You talk about "hard drive" space even though phones don't have hard drives (more to the point, even if you transfer photos to your desktop they will start on your phone and take up space). The iPhone 15 base model comes with 128GB storage.
Uncompressed images take up huge amounts of space and that still affects network transfer times, phone storage, cloud storage, etc.
Anyway you can shoot RAW on your phone right now, which is what you are looking for. Still, it is a niche application because of the storage required.
> I feel like PNG was a really bad format back when hard drives were 100GB
You talk about "hard drive" space even though phones don't have hard drives (more to the point, even if you transfer photos to your desktop they will start on your phone and take up space). The iPhone 15 base model comes with 128GB storage. Uncompressed images take up huge amounts of space and that still affects network transfer times, phone storage, cloud storage, etc.
Anyway you can shoot RAW on your phone right now, which is what you are looking for. Still, it is a niche application because of the storage required.