MPA
Elite Veteran
Location: Australia
| On the subject of EXIF properties.
What are EXIF properties.
Inside a JPEG or TIFF image you can have stored (embedded) information in the file.
There are a number of types of information that is stored with the image.
One being a simply "comment" with a number of fields like author and so on.
You normally add that info to a file.
EXIF info is a nother data set of fields but EXIF info is wrritten by the camera that took that shot.
The EXIF entries include date taken, camera used, focal length, f-stop value, shutter speed and more like auto focus mode and other camera specific entries. (see link below for each specific EXIF)
In Windows XP if you right click and image and select properties it will show "description" info, if you press the "advanced" button you will then see detailed EXIF properties.
Many pics posted in the forum here have EXIF properties still in them.
In most editors like Photo Shop when you edit an image and save it as JPG the EXIF info is lost.
Some editors like the one mentioned elsewhere, Irfanview, can be set to retain the EXIF info in files saved after manipulation.
This can come in handy having the original shooting info still in tact in the file to back check what it was taken at..
It is also handy after shooting a pile of pics on Auto because each shot will have the shutter speed auto used for that shot in the EXIF info of the JPG.
(EXIF = Exchangeable Image File Format)
A description here
http://park2.wakwak.com/~tsuruzoh/C...ams/exif-e.html
Anyway thats the end of EXIF lesson.
For those that know already, already.
For those that dont, its handy to know. |
