Hello again Andreas.
I have now gone to https://github.com/darktable-org/darktable/pull/1680
as you suggested.
I saw that some values were different from mine, but that is to be
expected since his D850 firmware was different from my firmware. As you
can see, his firmware was 1.01. Whereas my firmware is more recent,
namely 1.02.
But I also saw something else. On the D850, there are eight - 8
-predefined white balance presents. These are, in the following order:
- Auto
- Natural Light Auto
- Incandescent
- Fluorescent
- Direct Sunlight
- Flash
- Cloudy
- Shade
These are all the presets that are on the D850.
From these 8 presets, I got the following values listed in the same
order for clarity:
----
The Nikon D850 White Balance presets: (Firmware 1.02)
Auto: { "NIKON", "D850", "Auto0", 0, { 1.30127, 1, 1.873047, 0 } },
Natural Light Auto: { "NIKON", "D850", "Natural Auto", 0, { 1.852051,
1, 1.375488, 0 } },
Incandescent: { "NIKON", "D850", "Incandescent", 0, { 1.205078, 1,
2.206543, 0 } },
Fluorescent: { "NIKON", "D850", "Cool WHT FL", 0, { 1.721191, 1,
2.064453, 0 } },
Direct Sunlight: { "NIKON", "D850", "Direct sunlight", 0, { 1.900391,
1, 1.375488, 0 } },
Flash: { "NIKON", "D850", "Flash", 0, { 2.164063, 1, 1.204102, 0 } },
Cloudy: { "NIKON", "D850", "Cloudy", 0, { 2.049805, 1, 1.244629, 0 } },
Shade: { "NIKON", "D850", "Shade", 0, { 2.396484, 1, 1.114258, 0 } },
----
Whereas, on https://github.com/darktable-org/darktable/pull/1680 I saw
the following:
----
Incandescent: { "Nikon", "D850", Incandescent , 0, { 1.205078125, 1,
2.206542969, 0 } },
CoolWhiteFluorescent: { "Nikon", "D850", CoolWhiteFluorescent , 0, {
1.721191406, 1, 2.064453125, 0 } },
DirectSunLight: { "Nikon", "D850", DirectSunlight , 0, { 1.900390625, 1,
1.375488281, 0 } }
Flash: { "Nikon", "D850", Flash , 0, { 2.1640625, 1, 1.204101562, 0 } },
Cloudy: { "Nikon", "D850", Cloudy , 0, { 2.049804688, 1, 1.244628906, 0
} },
Shade: { "Nikon", "D850", Shade , 0, { 2.396484375, 1, 1.114257812, 0 } },
SodiumVaporFluorescent: { "Nikon", "D850", SodiumVaporFluorescent , 0, {
1.121582031, 1, 2.477050781, 0 } },
WarmWhiteFluorescent: { "Nikon", "D850", WarmWhiteFluorescent , 0, {
1.208496094, 1, 1.979003906, 0 } },
WhiteFluorescent: { "Nikon", "D850", WhiteFluorescent , 0, {
1.377929688, 1, 2.361328125, 0 } },
DayWhiteFluorescent: { "Nikon", "D850", DayWhiteFluorescent , 0, {
1.76953125, 1, 1.3984375, 0 } },
DaylightFluorescent: { "Nikon", "D850", DaylightFluorescent , 0, {
2.018066406, 1, 1.112304688, 0 } },
HighTempMercuryVaporFluorescent: { "Nikon", "D850",
HighTempMercuryVaporFluorescent , 0, { 2.379882812, 1, 1.3671875, 0 } },
----
The results on https://github.com/darktable-org/darktable/pull/1680 are
different from mine in a number of ways.
There is no "Auto" white balance, which is crucially important. There
also is no "Natural Light Auto", there is no plain "Fluorescent" but a
number of different fluorescents which I presume are custom WB values. I
think that cannot harm, but be aware that these are not included in the
D850 white balance presets - which are the 8 ones I extracted. The 8
from the camera should be included first and foremost, since they are
those that come with the D850.
Then there are the different values, and why they are different. Here,
we know that the firmwares were also different as mentioned. I put my
RAW files (NEF) in the directory and used the perl script
https://xor.cryptomilk.org/darktable/wb_extract.pl exactly as instructed.
I hope I have managed to add to the clarification of the matter. Thank
you so much for the attention, and do no hesitate to ask me if there are
any questions.
Sincerely,
Per Inge
> Andreas Schneider wrote:
On Friday, 7 September 2018 16:28:43 CEST Per Inge Oestmoen wrote:
Hello Andreas!
Hi Per Inge,
I have now followed the instructions and run the perl script below, and
here are the results. Please tell me if I need to do something more with
them.
> https://xor.cryptomilk.org/darktable/wb_extract.pl
I've just discovered https://github.com/darktable-org/darktable/pull/1680
Maybe check if the values match your findings.
Andreas
Sincerely,
Per Inge Oestmoen, Norway
----
The Nikon D850 White Balance presets:
siberia@linux-hf6b:/run/media/siberia/WD_Passport/Nikon_D850_WB_presets>
perl wb_extract.pl _DSC0360_Auto.NEF
{ "NIKON", "D850", "Auto0", 0, { 1.30127, 1, 1.873047,
0 } },
siberia@linux-hf6b:/run/media/siberia/WD_Passport/Nikon_D850_WB_presets>
perl wb_extract.pl _DSC0361_Natural_Light_Auto.NEF
{ "NIKON", "D850", "Natural Auto", 0, { 1.852051, 1,
1.375488, 0 } },
siberia@linux-hf6b:/run/media/siberia/WD_Passport/Nikon_D850_WB_presets>
perl wb_extract.pl _DSC0362_Incandescent.NEF
{ "NIKON", "D850", "Incandescent", 0, { 1.205078, 1,
2.206543, 0 } },
siberia@linux-hf6b:/run/media/siberia/WD_Passport/Nikon_D850_WB_presets>
perl wb_extract.pl _DSC0363_Fluorescent.NEF
{ "NIKON", "D850", "Cool WHT FL", 0, { 1.721191, 1,
2.064453, 0 } },
siberia@linux-hf6b:/run/media/siberia/WD_Passport/Nikon_D850_WB_presets>
perl wb_extract.pl _DSC0364_Direct_Sunlight.NEF
{ "NIKON", "D850", "Direct sunlight", 0, { 1.900391, 1,
1.375488, 0 } },
siberia@linux-hf6b:/run/media/siberia/WD_Passport/Nikon_D850_WB_presets>
perl wb_extract.pl _DSC0365_Flash.NEF
{ "NIKON", "D850", "Flash", 0, { 2.164063, 1,
1.204102, 0 } },
siberia@linux-hf6b:/run/media/siberia/WD_Passport/Nikon_D850_WB_presets>
perl wb_extract.pl _DSC0366_Cloudy.NEF
{ "NIKON", "D850", "Cloudy", 0, { 2.049805, 1,
1.244629, 0 } },
siberia@linux-hf6b:/run/media/siberia/WD_Passport/Nikon_D850_WB_presets>
perl wb_extract.pl _DSC0367_Shade.NEF
{ "NIKON", "D850", "Shade", 0, { 2.396484, 1,
1.114258, 0 } },
siberia@linux-hf6b:/run/media/siberia/WD_Passport/Nikon_D850_WB_presets>
----
> Andreas Schneider wrote:
On Saturday, 1 September 2018 12:33:15 CEST Per Inge Oestmoen wrote:
Hello,
Hello Per Inge,
I have noticed that as of September 01, 2018, there are no white balance
presets for the Nikon D850.
Are there plans to include the white balance presets for the Nikon D850
soon?
Do you need and want me to provide some RAW files in order to help you
with the process?
if you want them, you need to take a pictures and calculate them.
I wanted to create a nice python script which can extract them, but exiv2
doesn't support it yet. However the developer promised to add support for
it.
In the meantime you can use a very old perl script. I've uploaded it here:
https://xor.cryptomilk.org/darktable/wb_extract.pl
It needs exiftool.
You need to take a picture for every preset available and I've also
created
presets for the following Kelvin values:
2500K
3200K
4500K
5000K
5500K
6000K
6500K
Put the RAW files in a directory and run the perl script from above. When
shooting the pictures, note down which image number is which preset.
Sometimes you don't find the name in the RAW.
Cheers,
Andreas
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Noise reduction is just another word for image destruction.
Per Inge Oestmoen, Norway
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