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ExifTool => Bug Reports / Feature Requests => Topic started by: linuxuser on May 24, 2017, 06:17:43 PM

Title: ISO: Exif-value vs. Makernotes with Pentax KP
Post by: linuxuser on May 24, 2017, 06:17:43 PM
[EXIF]          0x8827 ISO                             : 65535
[MakerNotes]    0x0014 ISO                             : 819200

The makernotes-value is the correct one

[EXIF]          0x8827 ISO                             : 65535
[MakerNotes]    0x0014 ISO                             : 128000


[EXIF]          0x8827 ISO                             : 65535
[MakerNotes]    0x0014 ISO                             : 80000


[EXIF]          0x8827 ISO                             : 64000
[MakerNotes]    0x0014 ISO                             : 64000

I don't know if this is a bug or an exif-specification issue.



Title: Re: ISO: Exif-value vs. Makernotes with Pentax KP
Post by: StarGeek on May 24, 2017, 07:10:13 PM
EXIF:ISO is only a unsigned 16 bit number, which maxes out at 65,535.  Under the newer EXIF spec, they added ISOSpeed which is a 32 bit number.

Previously on Exiftool forum: Duh (https://exiftool.org/forum/index.php?topic=4090.0) du! (https://exiftool.org/forum/index.php?topic=5700.0) (supposed to be Law & Order sound).
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