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Bug #12028

High ISO value not displayed properly

Added by Andy Chien 4 months ago.

Status:
New
Priority:
Low
Assignee:
-
Category:
General
Target version:
-
Start date:
02/22/2018
Due date:
% Done:

0%

Affected Version:
2.4.1
System:
all
bitness:
64-bit
hardware architecture:
amd64/x86

Description

While attempting to create denoise profile for Pentax KP, I noticed that the ISO value > 204800 are displayed as 0 in darktable. Here are some outputs from exiv2.

ISO 51200: ok
$ exiv2 -p v ACKP1352.DNG | grep -i iso
0x8827 Photo ISOSpeedRatings Short 1 51200
0x0014 PentaxDng ISO Short 1 33
0x0071 PentaxDng HighISONoiseReduction Byte 2 2 2

ISO 102400: ok
$ exiv2 -p v ACKP1353.DNG | grep -i iso
0x8827 Photo ISOSpeedRatings Short 1 65535
0x0014 PentaxDng ISO Short 1 36
0x0071 PentaxDng HighISONoiseReduction Byte 2 2 2

ISO 204800: ok
$ exiv2 -p v ACKP1354.DNG | grep -i iso
0x8827 Photo ISOSpeedRatings Short 1 65535
0x0014 PentaxDng ISO Short 1 39
0x0071 PentaxDng HighISONoiseReduction Byte 2 2 2

ISO 409600: wrong
$ exiv2 -p v ACKP1355.DNG | grep -i iso
0x8827 Photo ISOSpeedRatings Short 1 65535
0x0014 PentaxDng ISO Short 1 42
0x0071 PentaxDng HighISONoiseReduction Byte 2 2 2

ISO 819200: wrong
$ exiv2 -p v ACKP1356.DNG | grep -i iso
0x8827 Photo ISOSpeedRatings Short 1 65535
0x0014 PentaxDng ISO Short 1 45
0x0071 PentaxDng HighISONoiseReduction Byte 2 2 2

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