Novell

** This post is pretty incomplete, I gave up on it.   But there is enough info here that may be usefull**

eDirectory has several attributes for photos, here are the raw schema attributes from an eDirectory install from iMonitor.  An interesting note is that ldapPhoto and photo have the same OID.  Because the syntax is Octet String I think that the photos can be stored as either Binary Data or as a Base64 encoded representation of the image.

Using and populating these attributes can be tricky.  If you use Identity Manager, the User Application stores pictures in the photo attribute.

rfc2798 defines

2.6.  JPEG Photograph

   Used to store one or more images of a person using the JPEG File
   Interchange Format [JFIF].

    ( 0.9.2342.19200300.100.1.60
      NAME 'jpegPhoto'
      DESC 'a JPEG image'
      SYNTAX 1.3.6.1.4.1.1466.115.121.1.28 )

   Note that the jpegPhoto attribute type was defined for use in the
   Internet X.500 pilots but no referencable definition for it could be
   located.