Lightroom 2.5’s in-app camera adds in the ability to capture directly in DNG format.. Please refer Shoot in DNG raw in Lightroom for iOS 2.5
Let us know if need any other information.
1 person found this helpful
it's only available on devices with a 12MP Camera (unfortunately SE, 6S, 7).
Its Apple's decision apparently (i believe on the comments on that blog Its mentioned there)