kmilos
commented
1 day ago Have you tried exiv2 -pa? What exiv2 version? What exactly is "not correct" here?
File is located at JPEG XL Discord
Not a public link.
Open 1div0 opened 1 day ago
kmilos
commented
1 day ago Have you tried exiv2 -pa? What exiv2 version? What exactly is "not correct" here?
File is located at JPEG XL Discord
Not a public link.
1div0
commented
1 day ago For instance file type is TIFF, while preview image is JPEG versus primary image JPEG XL. Confusing at least.
GH does not recognize DNG as a valid file type. So I borrowed the file and share it here https://xn--dsseldorf-q9a.reflexion.tv/nextcloud/index.php/s/gPztsneSHKHAmgg
kmilos
commented
1 day ago For instance file type is TIFF
This is true for any DNG, unrelated to iPhone 16...
And this is absolutely correct - this is a DNG (i.e. TIFF) file type, just happens to have JPEG XL compression inside (which you can see if you do exiv2 -pa).
The usefulness/accuracy of the summary (w/o -pa or any other option) is somewhat debatable in general for other formats as well, and again not related to iPhone 16 only.
The exiv2 -pa output looks ok to me.
Anything else?
I borrowed the file and share it here
Thank you!
1div0
commented
1 day ago Exif.Image.NewSubfileType Long 1 Thumbnail/Preview image
but
exiv2 IMG_0051.DNG
says
Thumbnail : None
1div0
commented
1 day ago bin/exiv2 -V exiv2 1.00.0.9
kmilos
commented
1 day ago $ exiv2 -pp IMG_0051.DNG
Preview 1: image/tiff, 4032x3024 pixels, 2155590 bytesAt least 0.28.3 here detects the preview correctly, and can also extract it as well.
It is actually a TIFF preview (just one of the sub-images in a DNG/TIFF), it's just a JPEG compressed stripe/tile within. If it were stored in a dedicated tag like 0x201, it would get detected/extracted as a "real" JPEG (image/jpeg type). Again, nothing iPhone 16 specific.
Thumbnail : None
Someone can keep chasing this down if they think this its important...
P.S. Please update the title to this specific issue only, I don't see anything else incorrect here.
€ exiv2 IMG_0051.DNG Názov súboru : IMG_0051.DNG Veľkosť súboru : 9149775 bajtov MIME typ : image/tiff Veľkosť obrázka : 8064 x 6048 Náhľad : Nič Zmačka fotoaparátu: Apple Model fotoaparátu: iPhone 16 Pro Max Časová známka obrázka: 2024:09:21 12:50:16 File number : Čas expozície : 1/292 s Clona : F1.8 Skreslenie expozície: 0 EV Blesk : No, compulsory Skreslenie blesku: Ohnisková vzdialenosť: 6.8 mm vzdialenosť subjektu: ISO rýchlosť : 64 Režim expozície : Auto merací režim : Multi-segment režim makro : Kvalita obrázka : Vyváženie bielej: Auto Copyright : Komentár EXIF :
€ LANG=en_US.UTF-8 exiv2 IMG_0051.DNG File name : IMG_0051.DNG File size : 9149775 Bytes MIME type : image/tiff Image size : 8064 x 6048 Thumbnail : None Camera make : Apple Camera model : iPhone 16 Pro Max Image timestamp : 2024:09:21 12:50:16 File number : Exposure time : 1/292 s Aperture : F1.8 Exposure bias : 0 EV Flash : No, compulsory Flash bias : Focal length : 6.8 mm Subject distance: ISO speed : 64 Exposure mode : Auto Metering mode : Multi-segment Macro mode : Image quality : White balance : Auto Copyright : Exif comment :
€ exiftool IMG_0051.DNG ExifTool Version Number : 12.70 File Name : IMG_0051.DNG Directory : . File Size : 9.1 MB File Modification Date/Time : 2024:09:21 04:50:16+02:00 File Access Date/Time : 2024:09:24 11:44:17+02:00 File Inode Change Date/Time : 2024:09:24 11:43:39+02:00 File Permissions : -rw-r--r-- File Type : DNG File Type Extension : dng MIME Type : image/x-adobe-dng Exif Byte Order : Big-endian (Motorola, MM) Make : Apple Camera Model Name : iPhone 16 Pro Max Preview Image Start : 3165996 Orientation : Rotate 90 CW Rows Per Strip : 3024 Preview Image Length : 2155462 Software : 18.0 Modify Date : 2024:09:21 12:50:16 Subfile Type : Full-resolution image Image Width : 8064 Image Height : 6048 Bits Per Sample : 10 10 10 Compression : JPEG XL Photometric Interpretation : Linear Raw Samples Per Pixel : 3 Planar Configuration : Chunky Tile Width : 2016 Tile Length : 2016 Tile Offsets : (Binary data 95 bytes, use -b option to extract) Tile Byte Counts : (Binary data 83 bytes, use -b option to extract) Linearization Table : (Binary data 5284 bytes, use -b option to extract) Black Level : 0 0 0 White Level : 65535 65535 65535 Noise Profile : 3e-05 3e-08 Default Black Render : None Profile Gain Table Map : (Binary data 3158080 bytes, use -b option to extract) Exposure Time : 1/292 F Number : 1.8 Exposure Program : Program AE ISO : 64 Exif Version : 0232 Date/Time Original : 2024:09:21 12:50:16 Create Date : 2024:09:21 12:50:16 Offset Time : +10:00 Offset Time Original : +10:00 Offset Time Digitized : +10:00 Shutter Speed Value : 1/292 Aperture Value : 1.8 Brightness Value : 6.500092353 Exposure Compensation : 0 Metering Mode : Multi-segment Flash : Off, Did not fire Focal Length : 6.8 mm Subject Area : 4027 3017 4435 2661 Maker Note Version : 15 Run Time Flags : Valid Run Time Value : 17579073804375 Run Time Scale : 1000000000 Run Time Epoch : 0 AE Stable : No AE Target : 220 AE Average : 235 AF Stable : Yes Acceleration Vector : 0.002362563975 -0.5096235276 -0.8552823665 Focus Distance Range : 0.03 - 1.09 m OIS Mode : 5 Image Capture Type : ProRAW Live Photo Video Index : 4294967764 HDR Headroom : 1.00999999 Signal To Noise Ratio : 47.22673031 Photo Identifier : 7D6C69F5-FFC4-43FA-8AD4-D09C19953B1D Focus Position : 255 HDR Gain : 2.779787778 AF Measured Depth : 15 AF Confidence : 100 Front Facing Camera : No Sub Sec Time Original : 858 Sub Sec Time Digitized : 858 Exif Image Width : 8064 Exif Image Height : 6048 Sensing Method : One-chip color area Scene Type : Directly photographed Exposure Mode : Auto White Balance : Auto Focal Length In 35mm Format : 24 mm Lens Info : 2.220000029-15.65999985mm f/1.779999971-2.8 Lens Make : Apple Lens Model : iPhone 16 Pro Max back triple camera 6.765mm f/1.78 GPS Latitude Ref : South GPS Longitude Ref : East GPS Altitude Ref : Above Sea Level GPS Time Stamp : 02:50:15 GPS Speed Ref : km/h GPS Speed : 0 GPS Img Direction Ref : True North GPS Img Direction : 301.3287049 GPS Dest Bearing Ref : True North GPS Dest Bearing : 301.3287049 GPS Date Stamp : 2024:09:21 GPS Horizontal Positioning Error: 6.942474894 m DNG Version : 1.7.0.0 DNG Backward Version : 1.3.0.0 Unique Camera Model : iPhone17,2 back camera Color Matrix 1 : 1.309169888 -0.6652565598 -0.2358742207 -0.4256954193 1.479145169 -0.02406900562 -0.03598230705 0.1377119124 0.6340663433 Color Matrix 2 : 0.9564185739 -0.379250437 -0.1338817328 -0.4042991698 1.29632628 0.08532455564 -0.09401905537 0.2064267248 0.4658730924 Analog Balance : 1.57421875 1 3.244384766 As Shot Neutral : 1 1 1 Baseline Exposure : -2.353936195 Baseline Sharpness : 1.5 Calibration Illuminant 1 : Standard Light A Calibration Illuminant 2 : D65 Noise Reduction Applied : 0.9499999881 Profile Name : Apple Embedded Color Profile Warning : [Minor] Not decoding some large array(s). Ignore minor errors to decode Profile Tone Curve : (large array of 514 float values) Run Time Since Power Up : 4:52:59 Aperture : 1.8 Image Size : 8064x6048 Megapixels : 48.8 Preview Image : (Binary data 2155462 bytes, use -b option to extract) Scale Factor To 35 mm Equivalent: 3.5 Shutter Speed : 1/292 Create Date : 2024:09:21 12:50:16.858+10:00 Date/Time Original : 2024:09:21 12:50:16.858+10:00 Modify Date : 2024:09:21 12:50:16+10:00 GPS Altitude : 24 m Above Sea Level GPS Date/Time : 2024:09:21 02:50:15Z GPS Latitude : 37 deg 48' 47.44" S GPS Longitude : 145 deg 0' 41.14" E Circle Of Confusion : 0.008 mm Field Of View : 73.7 deg Focal Length : 6.8 mm (35 mm equivalent: 24.0 mm) GPS Position : 37 deg 48' 47.44" S, 145 deg 0' 41.14" E Hyperfocal Distance : 3.04 m Light Value : 10.5 Lens ID : iPhone 16 Pro Max back triple camera 6.765mm f/1.78
File is located at JPEG XL Discord https://discord.com/channels/794206087879852103/822105409312653333/1286883166107340860