Home › Forums › Nitro for iPhone and iPad › Nitro Support for ProRaw DNG (JPEG XL)
Tagged: ProRaw DNG JPEG XL
- This topic has 8 replies, 2 voices, and was last updated 1 year, 1 month ago by
Nik Bhatt.
-
AuthorPosts
-
September 24, 2024 at 1:10 pm #133722
John A.
ParticipantI downloaded a sample iPhone 16 Pro ProRaw DNG JPEG XL file from the internet. It opened in Nitro just fine and seemed to take edits like older ProRaw files that I’ve edited in the past. Is there anything different about editing this new DNG file type that we should know about? Thanks!
September 24, 2024 at 8:00 pm #133740
Nik BhattKeymasterIt’s not a RAW file, and it’s not a ProRAW file. It’s relatively new file format that is intended to replace JPEG. It seems that Apple is using the DNG format to hold the JPEGXL data (since DNG is a general purpose container and not a RAW-specific container). At this point I don’t have any tips – it should just work.
September 25, 2024 at 4:17 am #133743John A.
ParticipantThanks, Nik – but when the sample file is opened in Nitro for iPad, both the tone map and RAW tuning sliders appear to be active. Not sure what to make of that. I checked the file in ExifTool and it appears to be ok. John.
September 25, 2024 at 9:01 am #133744John A.
ParticipantThis is a link to where you can download the sample file I’ve been testing. Thanks, John.
September 25, 2024 at 9:01 am #133746John A.
ParticipantThis is a link to the source of the sample file – thanks, John.
September 25, 2024 at 9:01 am #133752
Nik BhattKeymasterThanks, I’ll take a look.
September 25, 2024 at 10:14 am #133753
Nik BhattKeymasterThese are weird files. They act like ProRAW images – my code shows the sliders for ProRAW (and regular RAW) and they seem to work too, so….hmm.
These files do NOT work on earlier OS versions (Ventura, for example is not supported).
This will no doubt cause a lot of havoc as people take shots with their new phones and cannot open them on their older Macs and devices.September 25, 2024 at 11:03 am #133755John A.
ParticipantI have also read that these files contain a regular jpeg that will open when the ProRaw DNG wrapper is exported to a device or app not otherwise supporting ProRaw DNGs. In ExifTool these files look like linear DNGs, but I’ve not been able to find a lot of real information out there. In part, perhaps, because the early reviewers of the iPhone 16 Pro / Max were caught by surprise by this new output option and didn’t have time to make the usual comparisons. Thanks for looking into this, John.
September 28, 2024 at 7:03 am #133758
Nik BhattKeymasterI was able to get some more information about these files. They are indeed ProRAW files. The JPEGXL part is just the way they are compressed to save space. Yes, they also contain a JPEG as the preview.
-
AuthorPosts
- You must be logged in to reply to this topic.
