| Section | Bytes | Type | Make Model | Hex value | Value | Decoded |
|---|
| Canon Makernote 0x0099-0107 | Size: 4 | 4=uLong_32 | Canon Canon EOS-1D Mark III | 0x00000000 | 0 | Disable (use center AF point) |
| Canon Makernote 0x0099-0107 | Size: 4 | 4=uLong_32 | Canon Canon EOS-1D Mark III | 0x01000000 | 1 | Enable (use active AF point) |
| Canon Makernote 0x0099-0107 | Size: 4 | 4=uLong_32 | Canon Canon EOS-1D Mark IV | 0x00000000 | 0 | Disable (use center AF point) |
| Canon Makernote 0x0099-0107 | Size: 4 | 4=uLong_32 | Canon Canon EOS-1D Mark IV | 0x01000000 | 1 | Enable (use active AF point) |
| Canon Makernote 0x0099-0107 | Size: 4 | 4=uLong_32 | Canon Canon EOS-1Ds Mark III | 0x00000000 | 0 | Disable (use center AF point) |
| Canon Makernote 0x0099-0107 | Size: 4 | 4=uLong_32 | Canon Canon EOS-1Ds Mark III | 0x01000000 | 1 | Enable (use active AF point) |
| Canon Makernote 0x0099-0107 | Size: 4 | 4=uLong_32 | Canon Canon EOS-1D Mark III | 0x07010000 | 263 | Tag Number: 263 |
| Canon Makernote 0x0099-0107 | Size: 4 | 4=uLong_32 | Canon Canon EOS-1D Mark IV | 0x07010000 | 263 | Tag Number: 263 |
| Canon Makernote 0x0099-0107 | Size: 4 | 4=uLong_32 | Canon Canon EOS-1Ds Mark III | 0x07010000 | 263 | Tag Number: 263 |
| Canon Makernote 0x0099-0107 | Size: 4 | 4=uLong_32 | Canon Canon EOS-1D Mark III | 0x01000000 | 1 | Data Words: 1 |
| Canon Makernote 0x0099-0107 | Size: 4 | 4=uLong_32 | Canon Canon EOS-1D Mark IV | 0x01000000 | 1 | Data Words: 1 |
| Canon Makernote 0x0099-0107 | Size: 4 | 4=uLong_32 | Canon Canon EOS-1Ds Mark III | 0x01000000 | 1 | Data Words: 1 |