Results 1 to 11 of 11

Thread: EXIF Data

  1. #1
    Andrew76's Avatar
    Join Date
    Jul 2011
    Location
    Ontario, Canada
    Posts
    1,300
    Real Name
    Andrew

    EXIF Data

    Hey everyone - I know this is probably a really silly question, but computers are not really my thing! I've noticed that after posting some photos, people have commented on my EXIF Data, which is great - I'm all ears!! But, I would like to know how you get that data, say if I was looking at another photo on the forums here at CiC.

    Any help would be great! Thanks.

  2. #2
    Squidgy's Avatar
    Join Date
    Jun 2011
    Location
    Garforth, Leeds, West Yorkshire, UK
    Posts
    122
    Real Name
    Nigel Holmes

    Re: EXIF Data

    Hi Andrew, I think that is a great question and I would like to know too. Is EXIF the same as METADATA? Whats the difference and how does it work, what is it for?
    Last edited by Squidgy; 7th August 2011 at 05:37 PM. Reason: spelling mistake

  3. #3
    Andrew76's Avatar
    Join Date
    Jul 2011
    Location
    Ontario, Canada
    Posts
    1,300
    Real Name
    Andrew

    Re: EXIF Data

    It is the same as Metadata - I just assumed that we, in North America called it Metadata, and across the pond in the UK it was EXIF!?! Hopefully we get some good advice!

  4. #4
    jiro's Avatar
    Join Date
    Nov 2010
    Location
    Manila, Philippines
    Posts
    3,804
    Real Name
    Willie or Jiro is fine by me.

    Re: EXIF Data

    You can use this one. It's freeware: http://www.opanda.com/en/iexif/

    If you use Firefox as your browser there is a free add-on that will let you view the exif info of an image from the internet: https://addons.mozilla.org/en-US/fir...n/exif-viewer/

    Hope this helps.

  5. #5
    Andrew76's Avatar
    Join Date
    Jul 2011
    Location
    Ontario, Canada
    Posts
    1,300
    Real Name
    Andrew

    Re: EXIF Data

    That's all I needed to know! Thanks Jiro!

  6. #6
    Jim B.'s Avatar
    Join Date
    Dec 2008
    Location
    West Virginia
    Posts
    1,218
    Real Name
    Jim

    Re: EXIF Data

    You need to do a search for EXIF readers.I use Kuso.Another I'm familiar with is Opanda.They are free programs.When you have one loaded you can right click on an image here and if there is EXIF info you will be able to see it.

  7. #7
    Andrew76's Avatar
    Join Date
    Jul 2011
    Location
    Ontario, Canada
    Posts
    1,300
    Real Name
    Andrew

    Re: EXIF Data

    Eureka! It works!!! Thanks Jiro!!

    And, thanks for the extra advice Jim.

  8. #8
    Squidgy's Avatar
    Join Date
    Jun 2011
    Location
    Garforth, Leeds, West Yorkshire, UK
    Posts
    122
    Real Name
    Nigel Holmes

    Re: EXIF Data

    Quote Originally Posted by Andrew76 View Post
    It is the same as Metadata - I just assumed that we, in North America called it Metadata, and across the pond in the UK it was EXIF!?! Hopefully we get some good advice!
    LOL! Thanks Andrew, I dont get out much!

  9. #9
    Dizzy's Avatar
    Join Date
    Jul 2011
    Location
    Concrete, WA. USA
    Posts
    686
    Real Name
    Mike

    Re: EXIF Data

    Quote Originally Posted by jiro View Post
    If you use Firefox as your browser there is a free add-on that will let you view the exif info of an image from the internet: https://addons.mozilla.org/en-US/fir...n/exif-viewer/

    Hope this helps.
    It sure does help. Thanks for sharing the link..!

    Mike

  10. #10

    Join Date
    Nov 2009
    Location
    Provence, France
    Posts
    906
    Real Name
    Remco

    Re: EXIF Data

    Small addition:
    Metadata is all data in an image file that is not the image itself. To assure that program B can read what A has written, there are standard formats, of which EXIF is one. EXIF is the one cameras use (with often a part in private format, called makerdata), but there are other formats (IPTC, XMP) used by PP programs and such to store captions, keywords, copyright and licensing info, and such.

    The FF add-on reads the EXIF data (except for the makerdata, afaik), but not the other metadata

  11. #11
    darekk's Avatar
    Join Date
    Jul 2011
    Location
    Warsaw, Poland
    Posts
    100
    Real Name
    Dariusz Kowalczyk

    Re: EXIF Data

    IrfanView is quite good.
    And ExifTool
    Sample path for shortcut:
    "E:\Exiftool\exiftool.exe" -a -u -w txt "E:\image.jpg"
    It creates image.txt file with many Exif tags and their values in the same directory as an image. Potentially ExifTool can read hundreds or maybe even more tags.

    Maybe metadata is everything except images and thumbnails themselves ?

    Actually EXIF consists of three main image file directories IFD (such tables with columns and rows):

    1) TIFF (0 IFD)
    2) Exif
    3) MakerNote

    Each of rows in these directories and in next ones can contain
    - "direct" value (data), like camera model, aperture value, number of exposure program etc. or
    - pointer (offset) to other IFD or offset to data block (and it's size). Data block can look like an entire list of data or only one row, but larger then row in original IFD or data block (it is used when data size does not fit the rowsize in an original IFD or data block).

    One of rows in TIFF IFD contains offset to Exif IFD, one of rows in Exif IFD points in turn at Makernote IFD.
    TIFF IFD contains also rows pointing at GPS IFD, Next IFD and Primary Image Data.
    Some of other rows also point at next tables or data blocks (lists), and next, and next ones. Especially MakerNote (tons of camera settings, additional smaller images, especially in RAW files). This is an entire tree.
    (everything starts from TIFF Header pointing at TIFF IFD)
    Most interesting data regarding exposure are located in Exif Directory and some of MakerNote child data blocks.

    Code:
    TIFF Header --> TIFF (0 IFD) --> Exif IFD --> MakerNote IFD
                                 --> GPS IFD
                                 --> 1st IFD (Thumbnail Data)
                                 --> Primary Image Data
    Some of informations in these tables and datablocks can duplicate. Especialy those in MakerNote (and it's child directiries and datablocks) with TIFF or Exif.

    TIFF, Exif and GPS IFD formats are universal, MakerNore IFD structure (and it's multiple childs) depends on company and it's file format.

    http://www.exif.org/Exif2-2.PDF
    schema - Page 15
    Last edited by darekk; 8th August 2011 at 04:54 PM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •