A7R VI camera support

[uknowwhatswrong]

I've uploaded the 6 sample images to pixls in full frame and aps-c mode

Settings 1/50 f10 ISO 100

*Raw lossless compressed
*Raw compressed HQ
*Raw compressed

[TurboGit]

@LebedevRI : I have transferred this issue here, first time I do that. Hope you don't mind a transfer, but this seems more appropriate here.

[chairman2s]

I was just about to open issue myself. just got the camera in the mail today. Must play with jpeg for a while then... Won't install windows again

[emko]

exiftool -s3 -ColorMatrix2 20260605-0029-02442.dng
1.1765 -0.5595 -0.1192 -0.3689 1.1507 0.2485 0.0051 0.0681 0.5731

exiftool -s3 20260605-0029-02442.dng
exiftool 20260605-0029-02442.dng
ExifTool Version Number         : 13.50
File Name                       : 20260605-0029-02442.dng
Directory                       : .
File Size                       : 69 MB
File Modification Date/Time     : 2026:06:07 18:49:37-06:00
File Access Date/Time           : 2026:06:07 18:55:26-06:00
File Inode Change Date/Time     : 2026:06:07 18:49:37-06:00
File Permissions                : -rw-r--r--
File Type                       : DNG
File Type Extension             : dng
MIME Type                       : image/x-adobe-dng
Exif Byte Order                 : Little-endian (Intel, II)
Make                            : SONY
Camera Model Name               : ILCE-7RM6
Strip Offsets                   : 221364
Orientation                     : Horizontal (normal)
Rows Per Strip                  : 171
Strip Byte Counts               : 131328
Software                        : Adobe DNG Converter 18.3.2 (Windows)
Modify Date                     : 2026:06:07 18:49:36
Image Width                     : 10008
Image Height                    : 6672
Bits Per Sample                 : 16
Compression                     : JPEG
Photometric Interpretation      : Color Filter Array
Samples Per Pixel               : 1
Planar Configuration            : Chunky
CFA Repeat Pattern Dim          : 2 2
CFA Pattern 2                   : 0 1 1 2
CFA Plane Color                 : Red,Green,Blue
CFA Layout                      : Rectangular
Black Level Repeat Dim          : 2 2
White Level                     : 16383
Default Scale                   : 1 1
Default Crop Origin             : 12 8
Default Crop Size               : 9984 6656
Bayer Green Split               : 250
Anti Alias Strength             : 1
Best Quality Scale              : 1
Active Area                     : 0 0 6672 10008
Opcode List 3                   : WarpRectilinear
Preview Image Start             : 352692
Preview Image Length            : 38864
Y Cb Cr Coefficients            : 0.299 0.587 0.114
Y Cb Cr Sub Sampling            : YCbCr4:2:0 (2 2)
Y Cb Cr Positioning             : Unknown (0)
Reference Black White           : 0 255 128 255 128 255
Subfile Type                    : Reduced-resolution image
Tile Width                      : 256
Tile Length                     : 171
Tile Offsets                    : 601962
Tile Byte Counts                : 7013
Black Level                     : 7588 0 0
Opcode List 2                   : MapPolynomial, MapPolynomial, MapPolynomial
Cache Version                   : 0.1.0.0
JXL Distance                    : 1
JXL Effort                      : 7
JXL Decode Speed                : 4
XMP Toolkit                     : Adobe XMP Core 7.0-c000 1.000000, 0000/00/00-00:00:00
Creator Tool                    : Adobe DNG Converter 18.3.2 (Windows)
Metadata Date                   : 2026:06:07 18:49:36-06:00
Document ID                     : xmp.did:61a8699f-fa1f-d546-84eb-d52e075bb3b5
Instance ID                     : xmp.iid:61a8699f-fa1f-d546-84eb-d52e075bb3b5
Original Document ID            : urn:uuid:3fddcd56-9bd6-4043-a1f6-850a076335ba
Lens                            : FE 24-70mm F2.8 GM II
Lens Distort Info               : 1042685170/1073741824 25000022/1073741824 5545110/1073741824 481050/1073741824
Date Created                    : 2026:06:05 00:29:49.313-07:00
Format                          : image/dng
Camera Profile                  : Camera ST
Look Name                       :
Has Settings                    : False
Has Crop                        : False
Already Applied                 : False
History Action                  : derived, saved
History Parameters              : converted from image/x-sony-arw to image/dng, saved to new location
History Instance ID             : xmp.iid:61a8699f-fa1f-d546-84eb-d52e075bb3b5
History When                    : 2026:06:07 18:49:36-06:00
History Software Agent          : Adobe DNG Converter 18.3.2 (Windows)
History Changed                 : /
Derived From Instance ID        : urn:uuid:a20e0ca3-7dbd-4da2-b979-2210a57c033a
Derived From Document ID        : urn:uuid:3fddcd56-9bd6-4043-a1f6-850a076335ba
Derived From Original Document ID: urn:uuid:3fddcd56-9bd6-4043-a1f6-850a076335ba
F Number                        : 2.8
Exposure Program                : Program AE
ISO                             : 800
Sensitivity Type                : Recommended Exposure Index
Recommended Exposure Index      : 800
Exif Version                    : 0232
Date/Time Original              : 2026:06:05 00:29:49
Create Date                     : 2026:06:05 00:29:49
Offset Time                     : -06:00
Offset Time Original            : -07:00
Offset Time Digitized           : -07:00
Shutter Speed Value             : 1/250
Aperture Value                  : 2.8
Brightness Value                : 2.74765625
Exposure Compensation           : 0
Max Aperture Value              : 2.8
Metering Mode                   : Multi-segment
Light Source                    : Unknown
Flash                           : Off, Did not fire
Sub Sec Time Original           : 313
Sub Sec Time Digitized          : 313
Color Space                     : sRGB
Focal Plane X Resolution        : 2802.07019
Focal Plane Y Resolution        : 2802.07019
Focal Plane Resolution Unit     : cm
File Source                     : Digital Camera
Scene Type                      : Directly photographed
Custom Rendered                 : Normal
Digital Zoom Ratio              : 1
Focal Length In 35mm Format     : 70 mm
Scene Capture Type              : Standard
Lens Info                       : 24-70mm f/2.8
Lens Model                      : FE 24-70mm F2.8 GM II
DNG Version                     : 1.7.0.0
DNG Backward Version            : 1.3.0.0
Unique Camera Model             : Sony ILCE-7RM6
Color Matrix 1                  : 1.1263 -0.7003 0.149 -0.2636 0.9664 0.3487 0.0148 0.0267 0.6591
Color Matrix 2                  : 1.1765 -0.5595 -0.1192 -0.3689 1.1507 0.2485 0.0051 0.0681 0.5731
Camera Calibration 1            : 1.0054 0 0 0 1 0 0 0 0.9213
Camera Calibration 2            : 1.0054 0 0 0 1 0 0 0 0.9213
Analog Balance                  : 1 1 1
As Shot Neutral                 : 0.446577 1 0.467794
Baseline Exposure               : 0.35
Baseline Noise                  : 0.6
Baseline Sharpness              : 1.33
Linear Response Limit           : 1
DNG Lens Info                   : 24-70mm f/2.8
Shadow Scale                    : 1
Rating                          : 0
Contrast                        : 0
Saturation                      : 0
Sharpness                       : +4
Brightness                      : 0
Long Exposure Noise Reduction   : On (unused)
High ISO Noise Reduction        : Normal
HDR                             : Off; Uncorrected image
WB Shift AB GM                  : 0 0
WB Shift AB GM Precise          : 0.00 0.00
Color Temperature               : Auto
Color Compensation Filter       : 0
Scene Mode                      : Standard
Zone Matching                   : ISO Setting Used
Dynamic Range Optimizer         : Auto
Image Stabilization             : On
Color Mode                      : Standard
Full Image Size                 : 9984x6656
Preview Image Size              : 1616x1080
File Format                     : ARW 6.0
Flash Exposure Compensation     : 0
White Balance Fine Tune         : 0
White Balance                   : Auto
Sony Model ID                   : Unknown (410)
Multi Frame Noise Reduction     : Off
Picture Effect                  : Off
Soft Skin Effect                : Off
Vignetting Correction           : Auto
Lateral Chromatic Aberration    : Auto
Distortion Correction Setting   : Off
Lens Type                       : E-Mount, T-Mount, Other Lens or no lens
Lens Spec                       : FE 24-70mm F2.8 II
Auto Portrait Framed            : No
Flash Action                    : Did not fire
Electronic Front Curtain Shutter: On
Focus Mode                      : AF-A
AF Area Mode Setting            : Flexible Spot
Flexible Spot Position          : 290 240
AF Point Selected               : n/a
AF Points Used                  : (none)
AF Tracking                     : Off
Focal Plane AF Points Used      : 2
Focal Plane AF Point Area       : 640 428
Focal Plane AF Point Location 1 : 284 240
Focal Plane AF Point Location 2 : 302 240
Multi Frame NR Effect           : Normal
Focus Location                  : 9984 6656 4524 3328
Variable Low Pass Filter        : n/a
Priority Set In AWB             : Standard
Metering Mode 2                 : Multi-segment
Exposure Standard Adjustment    : 0
RAW File Type                   : Lossless Compressed RAW
Quality                         : RAW
Pixel Shift Info                : n/a
Shadows                         : 0
Highlights                      : 0
Fade                            : 0
Sharpness Range                 : +3
Clarity                         : +1
Focus Frame Size                : 593x527
JPEG-HEIF Switch                : n/a
Focus Location 2                : 9984 6656 4524 3328
Hidden Data Offset              : 154088
Hidden Data Length              : 53248
Exposure Mode                   : Program AE
Flash Level                     : Normal
Release Mode                    : Normal
Sequence Number                 : Single
Anti-Blur                       : On (Shooting)
Intelligent Auto                : Off
Ambient Temperature             : 27 C
AF Area Mode                    : Flexible Spot
Focus Position 2                : 110
Sony ISO                        : 6535879
Stops Above Base ISO            : 16.0
Sony Exposure Time 2            : 7.3
Exposure Time                   : 1/267
Sony F Number 2                 : 0.0
Sony Max Aperture Value         : 0.0
Sequence Image Number           : 1793
Creative Style                  : Standard
Lens Format                     : Unknown
Lens Mount                      : Unknown
Distortion Corr Params          : 0 -512 767 2048 5120 8704 13312 19456 27136 -29696 -19456 -7680 6144 21505 -26111 -6143
Picture Profile                 : Unknown (64)
Focal Length                    : 0.2 mm
Min Focal Length                : 4812.8 mm
Max Focal Length                : 6144.2 mm
Battery Level                   : 16%
Lens Mount 2                    : E-mount
Lens Type 3                     : Sony FE 24-70mm F2.8 GM II
Camera E-mount Version          : 1.80
Lens E-mount Version            : 1.60
Lens Firmware Version           : Ver.02.000
Shutter                         : Mechanical (0 2393 0)
Flash Status                    : Flash Inhibited
Shutter Count                   : 699
Sony Exposure Time              : Bulb
Sony F Number                   : 0.1
Release Mode 2                  : Unknown (25)
Internal Serial Number          : 00000000
SR2 Sub IFD Offset              : 65926
SR2 Sub IFD Length              : 42478
SR2 Sub IFD Key                 : 0x44332211
Warning                         : [minor] Bad IDC_IFD SubDirectory start
Calibration Illuminant 1        : Standard Light A
Calibration Illuminant 2        : D65
Raw Data Unique ID              : C3D5BB799D0A8F6C26345AE15772CACB
Original Raw File Name          : 20260605-0029-02442.ARW
Camera Calibration Sig          : com.adobe
Profile Calibration Sig         : com.adobe
Profile Name                    : Adobe Standard
Profile Hue Sat Map Dims        : 90 30 1
Profile Hue Sat Map Data 1      : (large array of 8100 float values)
Profile Hue Sat Map Data 2      : (large array of 8100 float values)
Profile Embed Policy            : Allow Copying
Forward Matrix 1                : 0.4117 0.4403 0.1124 0.1488 0.82 0.0313 0.0332 0.0022 0.7897
Forward Matrix 2                : 0.3747 0.4196 0.1699 0.2077 0.7403 0.052 0.0893 0.0229 0.713
Preview Application Name        : Adobe DNG Converter
Preview Application Version     : 18.3.2
Preview Settings Digest         : 9f316a4a8566a177aaf643f2ebbed2ea
Preview Color Space             : sRGB
Preview Date Time               : 2026:06:07 18:49:35-06:00
Profile Look Table Dims         : 36 8 16
Profile Look Table Data         : (large array of 13824 float values)
Noise Profile                   : 0.00023299509168129 4.48506703715532e-08 0.000235396353093767 4.17735461149544e-08 0.000213147173266194 3.85426167101047e-08
New Raw Image Digest            : 6a9371504d1fa5cb989d40cea8a00d6f
Aperture                        : 2.8
CFA Pattern                     : [Red,Green][Green,Blue]
Image Size                      : 10008x6672
Lens ID                         : Sigma 24-70mm F2.8 DG DN II | A
Megapixels                      : 66.8
Preview Image                   : (Binary data 38864 bytes, use -b option to extract)
Shutter Speed                   : 1/267
Create Date                     : 2026:06:05 00:29:49.313-07:00
Date/Time Original              : 2026:06:05 00:29:49.313-07:00
Modify Date                     : 2026:06:07 18:49:36-06:00
Thumbnail TIFF                  : (Binary data 131544 bytes, use -b option to extract)
Focus Distance 2                : 0.3268 m
Light Value                     : 8.0
Scale Factor To 35 mm Equivalent: 350.0
Circle Of Confusion             : 0.000 mm
Field Of View                   : 28.8 deg
Focal Length 35mm Equiv         : 0.2 mm (35 mm equivalent: 70.0 mm)
Hyperfocal Distance             : 0.17 m

	<Camera make="SONY" model="ILCE-7RM6">
		<ID make="Sony" model="ILCE-7RM6">Sony ILCE-7RM6</ID>
		<CFA width="2" height="2">
			<Color x="0" y="0">RED</Color>
			<Color x="1" y="0">GREEN</Color>
			<Color x="0" y="1">GREEN</Color>
			<Color x="1" y="1">BLUE</Color>
		</CFA>
		<Crop x="0" y="0" width="-32" height="0"/>
		<Sensor black="512" white="16383"/>
		<ColorMatrices>
			<ColorMatrix planes="3">
				<ColorMatrixRow plane="0">11765 -5595 -1192</ColorMatrixRow>
				<ColorMatrixRow plane="1">-3689 11507 2485</ColorMatrixRow>
				<ColorMatrixRow plane="2">51 681 5731</ColorMatrixRow>
			</ColorMatrix>
		</ColorMatrices>
	</Camera>

and you have to increase the width and high check in the Arw decoder as the resolution is larger then the current values

if anyone wants to use their images until someone adds support

[n1sivakumar]

Are the A7m5 files (HQ, compressed) formats same as A7RM6?

[emko]

Are the A7m5 files (HQ, compressed) formats same as A7RM6?

i only tested lossless compressed, seems to work just fine

[n1sivakumar]

Are the A7m5 files (HQ, compressed) formats same as A7RM6?

i only tested lossless compressed, seems to work just fine

Lossless was already working (was able to open in DT). Only the compressed/hq files were unsupported. For A7v.

[chairman2s]

I've been digging into why my A7R VI (ILCE-7RM6) files don't load, and I have some
concrete details that might help. All the numbers below I checked on my own files
(exiftool + darktable-rs-identify).

Disclosure: I used an AI assistant (Claude) as a tool while investigating and
debugging this. I've verified everything against my own files and I understand the
issue myself — flagging the AI use up front per AGENTS.md.

The camera / RAW

• SONY / ILCE-7RM6, ARW 6.0, SonyRawFileType = "Sony Lossless Compressed RAW 2"
  (so these go through DecodeLJpeg)
• Full sensor dimensions: 10240 × 7168
• Active area (SonyRawImageSize): 10008 × 6672
• Tiles: 512 × 512 → 20 × 14 = 280 tiles
• 14-bit, black level 512, white level 15360
• CFA: RGGB (CFAPattern2 = 0 1 1 2; rs-identify filters 0x94949494)
• ColorMatrix2 (from Adobe DNG Converter output on my own files):
  1.1765 -0.5595 -0.1192 -0.3689 1.1507 0.2485 0.0051 0.0681 0.5731

The blocker

Decode fails with:

[rawspeed] ArwDecoder::DecodeLJpeg, line ~318: Unexpected image dimensions found: (10240; 7168)

The hardcoded dimension guards in ArwDecoder.cpp reject this body — its frame is
larger than any currently supported Sony:

• DecodeLJpeg: width > 9728 || height > 6656
• DecodeARW2 and DecodeUncompressed: width > 9600 || height > 6376

10240 × 7168 exceeds all of these, so the file is thrown out before any decoding.

What I tested locally

I raised those caps and added a cameras.xml entry. With that it decodes fine:

• No tile errors.
• darktable-rs-identify reports the correct metadata (black 512, white 15360,
  uncropped 10240×7168, cropped 10008×6672, cropOffset 0,0).
• I compared the decoded raw against LibRaw (which already supports this camera) and
  the per-pixel mean matches exactly (2067.17), so the LJpeg decode itself is correct
  once the file is allowed through.

The cameras.xml entry I used (the active-area crop is derived correctly from
SonyRawImageSize, so no <Crop> needed):

<Camera make="SONY" model="ILCE-7RM6">
    <ID make="Sony" model="ILCE-7RM6">Sony ILCE-7RM6</ID>
    <CFA width="2" height="2">
        <Color x="0" y="0">RED</Color>
        <Color x="1" y="0">GREEN</Color>
        <Color x="0" y="1">GREEN</Color>
        <Color x="1" y="1">BLUE</Color>
    </CFA>
    <Sensor black="512" white="15360"/>
    <ColorMatrices>
        <ColorMatrix planes="3">
            <ColorMatrixRow plane="0">11765 -5595 -1192</ColorMatrixRow>
            <ColorMatrixRow plane="1">-3689 11507 2485</ColorMatrixRow>
            <ColorMatrixRow plane="2">51 681 5731</ColorMatrixRow>
        </ColorMatrix>
    </ColorMatrices>
</Camera>

I can upload sample RAWs (full-frame and APS-C, all three compression modes) to
raw.pixls.us — just say what you need.

[emko]

I've been digging into why my A7R VI (ILCE-7RM6) files don't load, and I have some concrete details that might help. All the numbers below I checked on my own files (exiftool + darktable-rs-identify).

Disclosure: I used an AI assistant (Claude) as a tool while investigating and debugging this. I've verified everything against my own files and I understand the issue myself — flagging the AI use up front per AGENTS.md.

The camera / RAW

* `SONY` / `ILCE-7RM6`, ARW 6.0, `SonyRawFileType` = "Sony Lossless Compressed RAW 2"
  (so these go through `DecodeLJpeg`)

* Full sensor dimensions: **10240 × 7168**

* Active area (`SonyRawImageSize`): **10008 × 6672**

* Tiles: 512 × 512 → 20 × 14 = **280 tiles**

* 14-bit, black level **512**, white level **15360**

* CFA: **RGGB** (`CFAPattern2 = 0 1 1 2`; rs-identify filters `0x94949494`)

* `ColorMatrix2` (from Adobe DNG Converter output on my own files):
  `1.1765 -0.5595 -0.1192  -0.3689 1.1507 0.2485  0.0051 0.0681 0.5731`

The blocker

Decode fails with:

[rawspeed] ArwDecoder::DecodeLJpeg, line ~318: Unexpected image dimensions found: (10240; 7168)

The hardcoded dimension guards in ArwDecoder.cpp reject this body — its frame is larger than any currently supported Sony:

* `DecodeLJpeg`: `width > 9728 || height > 6656`

* `DecodeARW2` and `DecodeUncompressed`: `width > 9600 || height > 6376`

10240 × 7168 exceeds all of these, so the file is thrown out before any decoding.

What I tested locally

I raised those caps and added a cameras.xml entry. With that it decodes fine:

* No tile errors.

* `darktable-rs-identify` reports the correct metadata (black 512, white 15360,
  uncropped 10240×7168, cropped 10008×6672, cropOffset 0,0).

* I compared the decoded raw against LibRaw (which already supports this camera) and
  the per-pixel mean matches exactly (2067.17), so the LJpeg decode itself is correct
  once the file is allowed through.

The cameras.xml entry I used (the active-area crop is derived correctly from SonyRawImageSize, so no <Crop> needed):

Sony ILCE-7RM6 RED GREEN GREEN BLUE 11765 -5595 -1192 -3689 11507 2485 51 681 5731

I can upload sample RAWs (full-frame and APS-C, all three compression modes) to raw.pixls.us — just say what you need.

where did you get white point 15360 from? i guess getting it from the DNG White Level is wrong? and can you give me a link to LibRaw source where it has support for A7RM6?

[emko]

@chairman2s i don't even see it listed on https://www.libraw.org/supported-cameras

also LibRaw/LibRaw#828 ??? open issue requesting support for this camera weird

[dev-null-undefined]

An LLM implemented support for the Compressed / Compressed-HQ format (TIFF compression 32766, ARW6) for me. I have not reviewed or verified the code myself - sharing for reference, not as a vetted contribution.

I'm running it via my NixOS config (darktable built against the patched rawspeed) and it decodes my ILCE-7RM6 files.

• branch: https://github.com/dev-null-undefined/rawspeed/tree/arw6-ilce7rm6
• commit: dev-null-undefined@395faef
• NixOS config: dev-null-undefined/NixOs@031629c

[chairman2s]

Sorry, my mistake. it isn't supported but it works... I got the value 15360 with exifool. The neat part is rawspeed already does the right thing on its
own: ArwDecoder::GetWB() decrypts the SR2 IFD and sets whitePoint
= SONYWHITELEVEL >> mShiftDownScaleForExif. For this camera
(Lossless Compressed RAW 2, 14-bit, so the shift is 0) that comes
out to 15360. LibRaw lands on the same number too — raw-identify
-v shows Highlight linearity limits: 15360.
You are completly right, there is no spesific support in libraw it just decodes the file generically as a normal Sony
Lossless Compressed RAW 2 ARW and reads the white/black from the
in-file tags, which is how it gets 15360 without any
model-specific code.

The main thing is that now the arw files works on my computer at least

[abbradar]

FWIW, LLM has also independently implemented the ARW6 decoder for me; I used it with both darktable and dnglab for a month. I've finally (I think!) figured out the format, simplified the decoder/fixed accuracy bugs, and implemented a reference decoder. Hope it helps; I don't have enough time now to implement a decoder in rawspeed on top of it. Cross-posted from a dnglab issue.