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General => Metadata => Topic started by: Tic tac on October 11, 2012, 09:18:32 AM

Title: Nikon D4 EXIF maker notes not visible
Post by: Tic tac on October 11, 2012, 09:18:32 AM
Hi,

I'm trying to see my Flash exposure compensation setting, but I am not able to.

Anyone know why that is?

Thanks
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Phil Harvey on October 11, 2012, 10:17:22 AM
The D4 doesn't have a built-in flash.  But the external flash compensation should be extracted as ExternalFlashExposureComp.

- Phil
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Tic tac on October 14, 2012, 02:08:54 PM
I dont know why... I can see the ExternalFlashExposureComp entry, but it shows "0" instead of the "-1.5" or whatever value I had my camera set to for flash compensation.
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Phil Harvey on October 14, 2012, 05:27:38 PM
Interesting.  If you send me a few samples with different (known) values of flash compensation I'll take a look into this.  My email is philharvey66 at gmail.com

- Phil
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Tic tac on October 14, 2012, 07:51:40 PM
ok thanks !!!

... email just sent
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Phil Harvey on October 15, 2012, 07:49:03 AM
Thanks!  I got the samples.  The flash information is new for the D4 and needs to be decoded.  I'll work on this.

Could you tell me what is the model of the flash unit you are using?

Thanks.

- Phil

P.S. There is a lot of other flash information that needs to be decoded (see here (https://exiftool.org/TagNames/Nikon.html#FlashInfo0103)).  If you want to help by providing samples for other settings, please let me know.   (You don't need to upload the full NEF images, just send me the EXIF output from "exiftool -o %d%f.exif FILE".)
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Tic tac on October 15, 2012, 08:34:40 PM
Hi !

I use both a Nikon SB-900 and SB-910.

Not sure what other flash settings would be useful to you, let me know what you need, it it's not too time consuming, I'll try to provide some samples.

THanks!!!
Yvon
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Phil Harvey on October 16, 2012, 06:38:02 AM
Hi Yvon,

Thanks!  It would be useful to know the exact model used for the last pictures.

As far as more samples goes, how about these?:

1) Bounce flash
2) Commander mode on
3) Repeating flash mode
4) GN mode

- Phil
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Tic tac on October 16, 2012, 03:13:46 PM
ok give me a few days, I'll get you that.

Yvon
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Tic tac on October 16, 2012, 03:15:53 PM
Hum, by the way, I'm not 100% sure which flash I was using when I did the samples I sent you. I'm pretty sure it was my SB-910, but...

Next time I will pay attention to that.
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Phil Harvey on October 16, 2012, 06:19:25 PM
Thanks!

I'll put it down as the SB-910, which makes sense because it has firmware version 7.01.  The SB-900 firmware versions I have seen are in the range 5.x.

- Phil
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Tic tac on October 18, 2012, 10:15:44 AM
Files just sent to you with what you were looking for.

Yvon
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Phil Harvey on October 19, 2012, 08:06:37 AM
Excellent, thanks!  This allows me to decode some useful flash information!!

Look for this to appear in ExifTool 9.04 when it is released.

- Phil
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Tic tac on November 04, 2012, 09:23:27 AM
Well... I just installed 9.04 and it does not seem to show flash exposure compensation for my D4...

Do you confirm that the update is in this version of the tool?

Thanks...
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Phil Harvey on November 04, 2012, 09:37:20 AM
Hi Yvon,

The tag name is FlashCompensation.  I tried this on some samples, and ExifTool 9.04 extracts this for me from D4 images.

- Phil
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Tic tac on November 04, 2012, 12:11:34 PM
Oh, ok yes, I was able to see it, it works... sorry

I was trying to see this data through the Metadata viewer plugin for Lightroom, from Jeffrey Friedl, but that does not work. I suppose Jeffrey needs to update his plugin as well... (would you know if that is true by any chance?)

Thanks again
Yvon
Title: Re: Nikon D4 EXIF maker notes not visible
Post by: Phil Harvey on November 04, 2012, 12:20:07 PM
Hi Yvon,

You should be able to update the copy of exiftool that Jeffrey's plug-in is using.  The only trick is finding out where it is stored so you can update it.

- Phil
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