Probably you already know, but just for safety:
I just compared the makernotes of four Pentax K-3 files with not touching the camera settings at all. Camera stable in a table. There are a lot of yet undeciphered tags which do change between the four pictures and thus can't have a camera setting behind them:
[Pentax] Pentax Shot Info 0x0005 : 111
[Pentax] Pentax 0x023b : ..@§ ..!Àƒ
[Pentax] Pentax 0x0240 : .$=œ...xÐ.[...]
[Pentax] Pentax Unknown Info 0x0008 : 145
[Pentax] Pentax Unknown Info 0x0009 : 42
[Pentax] Pentax Unknown Info 0x000c : 249
[Pentax] Pentax Unknown Info 0x000e : 249
[Pentax] Pentax Unknown Info 0x0010 : 249
[Pentax] Pentax Unknown Info 0x0012 : 249
[Pentax] Pentax Unknown Info 0x0018 : 51
[Pentax] Pentax Unknown Info 0x001a : 51
[Pentax] Pentax Unknown Info 0x0020 : 56
[Pentax] Pentax Unknown Info 0x0022 : 243
[Pentax] Pentax Unknown Info 0x0023 : 79
[Pentax] Pentax Unknown Info 0x0024 : 17
[Pentax] Pentax Unknown Info 0x0026 : 64
[Pentax] Pentax Unknown Info 0x0038 : 52
[Pentax] Pentax Unknown Info 0x003e : 148
[Pentax] Pentax Unknown Info 0x004a : 5
[Pentax] Pentax Unknown Info 0x004c : 254
[Pentax] Pentax Unknown Info 0x004d : 7
[Pentax] Pentax Unknown Info 0x004e : 1
[Pentax] Pentax Unknown Info 0x0050 : 6
[Pentax] Pentax Unknown Info 0x0056 : 1
[Pentax] Pentax Unknown Info 0x0058 : 0
[Pentax] Pentax 0x0404 : ...... ..·æ.3...Ìüîêz.øê 1ÆêêH¬ê.fºêZ}ƒê€"nêʳwê|[...]
[Pentax] Pentax 0x0406 : .... ..·æ.3...Scsuå,,gt<¬ZwtÔ1vŒú qÄæ.p..õsT*ìrìQÛ[...]
They have to be some kind of shot specific data.
The one thing I can mention there is that
[Pentax] Pentax Unknown Info 0x000c : 249
[Pentax] Pentax Unknown Info 0x000e : 249
[Pentax] Pentax Unknown Info 0x0010 : 249
[Pentax] Pentax Unknown Info 0x0012 : 249
did go up by +1 for each consecutive shot other than the first step where it went +2.
Yes. If you take a look at the Pentax.pm code, you will sometimes see notes for unknown information:
%Image::ExifTool::Pentax::UnknownInfo = (
%binaryDataAttrs,
GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
# K10D: first 8 bytes seem to be short integers which change with ISO (value
# is usually close to ISO/100) possibly smoothing or gain parameters? - PH
# byte 0-1 - Higher for high color temperatures (red boost or red noise suppression?)
# byte 6-7 - Higher for low color temperatures (blue boost or blue noise suppression?)
# also changing are bytes 10,11,14,15
);
I didn't note the incrementing values though. Interesting.
- Phil