The uncompressed or RAW image sample buffer for the photo, if requested.
- iOS 11.0+
If you requested photo capture in a RAW format, or in a processed format without compression such as TIFF, you can use this property to access the underlying sample buffer.
If you requested capture in a compressed format such as JPEG or HEVC/HEIF, this property's value is
nil. Use the
cg method to obtain compressed image data.