Since the JPGs are a compressed file format, yes the DNGs will always give you the highest resolution. You also must
have your video setting at 4K to get the full 12 MP resolution in photo mode. When you switch to photo mode the image
will look stretched, if you are in full 12MP resolution. This is because the 12MP photos are formatted at a 4:3 aspect ratio,
but you are still previewing it on the 16:9 aspect ratio presented by the ST-16.