Lightroom - Shooting data: filter used

The metadata structure both EXIF (Camera Supplied) and IPTC (non-camera supplied) are governed by existing international standards.

http://en.wikipedia.org/wiki/Exchange... will give you a feel for the EXIF

IPTC information can be found here: http://www.iptc.org/site/Photo_Metadata/

AFAIK, there is no field specifically for Filter. You can hijack an existing unused field or download a plugin that will give you a new field to use. John's Big Note plugin for Lightroom comes to mind.

Also, there is no way for a camera to really know what filter you used for a shot (unlike much of the other metadata you list). So, by definition, this metadata is user-specific and will need to be entered manually.

There are a few "notes" fields where something like this would be appropriate. You will have to come up with your own encoding if you want the data to be normalized.

It would also be trivial to create a custom metadata field of your own that normalized data for you.

The custom metadata "master" thread:

http://feedback.photoshop.com/photosh...

P.S. Could be merged, I think.