How to read MRWInfo in ARW-images?

[drcq]

I have not used ExifTool for a longer time and find out that the 0x7250 TagID in SR2 IFD is now recognized as MRWInfo. In my images this tag has length of about 18432 SHORT values (I checked the binary content). Unfortunately, the ExifTool don't display/translate this content. Do I need a special option to get the MRWInfo content shown? For my first view, these data looks like encoded content. Can I get some more details about this topic?

Best regards,
Christoph

[Phil Harvey]

Hi Christoph,

ExifTool extracts a lot of information from MRWInfo for some camera models.  The -v2 option is the best way to see what is going on here.  But without knowing the specific camera model you are looking at, I can't help more.

- Phil

[drcq]

Hi Phil,
thanks for fast response. I'm looking at Sony 7RM3 ARW files. With the -v2 option I got the following results:
  | + [SR2 directory with 9 entries]
  | | 0)  SR2SubIFDOffset = 54012
  | |     - Tag 0x7200 (4 bytes, int32u[1])
  | | 1)  SR2SubIFDLength = 56958
  | |     - Tag 0x7201 (4 bytes, int32u[1])
  | | 2)  Sony_SR2Private_0x7202 = 0
  | |     - Tag 0x7202 (2 bytes, int16u[1])
  | | 3)  Sony_SR2Private_0x7220 = 1
  | |     - Tag 0x7220 (2 bytes, int16u[1])
  | | 4)  SR2SubIFDKey = 1144201745
  | |     - Tag 0x7221 (4 bytes, undef[4] read as int32u[1])
  | | 5)  IDC_IFD (SubDirectory) -->
  | |     - Tag 0x7240 (4 bytes, int32u[1])
  | | + [SonyIDC directory with 0 entries]
  | | 6)  Sony_SR2Private_0x7241 = 0
  | |     - Tag 0x7241 (4 bytes, int32u[1])
  | | 7)  MRWInfo (SubDirectory) -->
  | |     - Tag 0x7250 (36864 bytes, int16u[18432] read as undef[36864])
  | |   Sony_SR2Private_0x7251 = 0
  | |     - Tag 0x7251 (2 bytes, int16u[1])

But the content of the MRWInfo SubDirectory isn't explaind here.

Best regards,
Christoph

[Phil Harvey]

Hi Christoph,

You're right.  The MRWInfo data for the 7RM3 is different from older models, and isn't yet decoded by ExifTool.

- Phil