SQL Server - binary column value change

[Sabina]

I am currently writing triggers to track changes in each column of each table of a database. It creater 2 audit tables: one with general info (userID, time, etc.) and other has details (oldvalue, newvalue, etc.)

How do you normally keep track of binary value change (old/new values for image for example)? Convert and save first 80 chars? Doesn't make much sense..
Just curious what are other practices on that.

Thanks,
Sabina

[Sabina]

Sorry, "vopros snyat."

References to text or image columns in either the inserted or deleted tables appeared as NULL.