Status of Konica-Minolta Dynax Maxxum 7D support

[Archive]

[Originally posted by springm on 2005-11-21 11:56:02-08]

As I discovered, decoding of MakerNotes information for Konica-Minolta Dynax/Maxxum 7D (and probably 5D as well) is only partial.
Are there plans to complete this? I am currently nagging Konica-Minolta's support for documentation of their MakerNotes, but got no answer up to now.

Markus

[Archive]

[Originally posted by exiftool on 2005-11-21 14:05:12-08]

Hi Markus,

Unfortunately, can expect no help from the manufacturer.  All of the maker note information has up till now been discovered by reverse engineering:  1) take a picture with your camera, 2) use ExifTool with the -U option to print unknown information in the maker notes, 3) change some camera settings and take another picture, 4) use ExifTool again to see what changed, 5) repeat.

I have been able to discover some new information myself by downloading sample images from the internet, but I can only decode obvious things like that because I don't know all the camera settings for these images.  All of the good information has been decoded by camera owners who have sat down and systematically run through their camera settings using the steps above.  I have done this for all the cameras I own (Canon, FujiFilm, Kodak,Pentax), but I don't own a 7D so I can't do it myself for this camera.

So the answer is yes.  I plan to add any new maker note information that anyone sends me.  :-)

[Archive]

[Originally posted by springm on 2005-11-21 15:09:12-08]

So I am willing to spend some time on this issue, at first trying to discover that d****d rotation information. But the comparison of two images (vertical vs. horizontal) leads to a lot of changed exif fields, and for three of them I haven't found any information: 0x0004, 0x0010 and 0x0020.
Do you have any hint with which one to begin?

[Archive]

[Originally posted by exiftool on 2005-11-21 15:34:07-08]

So the 7D doesn't update the standard EXIF Orientation tag?  Pity.

The tags you're looking at for the 7D contain a lot of binary information.  The data sizes for these tags are:

Code:

0x0004 - 286 bytes
0x0010 - 24576 bytes
0x0020 - 5684 bytes

The best way to investigate blocks like this is with the verbose option.  I would suggest using the '-v3' option to dump the first 96 bytes of all tag values in hex.  With any luck the rotation information is near the start of one of these fields.  Look for something changing from "00 00" (horizontal) to "00 5a" or "01 0e" (vertical -- these are hex for 90 and 270 respectively).

If this doesn't work, you might have to go to the '-v4' option to dump the entire data block.

Good luck.

[Archive]

[Originally posted by springm on 2005-11-22 20:45:13-08]

Is there a possibility to dump the tags Minolta_0x0004, Minolta_0x0010, Minolta_0x0020 in binary format, like I can do with

exiftool -b -MakerNoteMinolta pict0166.jpg

Thx

[Archive]

[Originally posted by exiftool on 2005-11-22 20:52:40-08]

You sure can.  Any unknown tag can be dumped in hex.  You just need to keep the -u option in the command line or else the unknown information won't be extracted:

Code:

   exiftool -u -b -minolta_0x0004 pict0166.jpg