JEITA CP-3451
- 53 -
Count
= 1
Default
= none
0
= Measurement without differential correction
1
= Differential correction applied
Other
= reserved
Note−When the tag Type is ASCII, it shall be terminated with NULL.
It shall be noted carefully that since the value count includes the terminator NULL, the total count is the
number of data+1. For example, GPSLatitudeRef cannot have any values other than Type ASCII 'N' or 'S';
but because the terminator NULL is added, the value of N is 2.
4.6.7
Interoperability IFD Attribute Information
The attached information(field name, code) stored in Interoperability IFD is listed in and the meaning will be
explained also.
Table 13 Interoperability IFD Attribute Information
Tag ID
Tag Name
Field Name
Dec
Hex
Type
Count
A. Attached Information Related to Interoperability
Interoperability Identification InteroperabilityIndex
1
1
ASCII
Any
A. Tags Relating to Interoperability
The rules for Exif image files defines the description of the following tag. Other tags stored in Interoperability IFD
may be defined dependently to each Interoperability rule.
InteroperabilityIndex
Indicates the identification of the Interoperability rule. The following rules are defined. Four bytes used
including the termination code (NULL).
Tag
= 1 (1.H)
Type
= ASCII
Count
=
Any
Default
= none
"R98"
= Indicates a file conforming to R98 file specification of Recommended Exif Interoperability Rules
(ExifR98) or to DCF basic file stipulated by Design Rule for Camera File System.
"THM"
= Indicates a file conforming to DCF thumbnail file stipulated by Design rule for Camera File System.