How to fill the contributor field?

[Bryan]

Normally the only credit appearing against a photo in the database is that in the copyright section, the pseudonym of the photographer.

 

However, for some images there is additionally a Contributor field, and, what's more, that field appears to be searchable when looking for keywords. This is unlike the pseudo, which requires an Advanced Search.

 

I suspect, but don't know, that the contributor field is only available to agencies, who wish to show both the agency name and that of the photographer?

[Bryan]

Thanks for the clarification Philippe.

 

I stumbled onto the searchable name thing while looking for a photo of an individual who also happened to be contributor to Alamy, didn't think to do the obvious and check the keywords!