• Try converting back to varchar, rather than nvarchar? If your initial string was a varchar, you need to convert back to that. For example:
    SELECT CONVERT(nvarchar(100),CONVERT(varbinary,CONVERT(image,'sdfashgu3o4ggjkxchbvkjasgvftkj'))); --varchar to nvarchar
    SELECT CONVERT(varchar(100),CONVERT(varbinary,CONVERT(image,'sdfashgu3o4ggjkxchbvkjasgvftkj'))); --varchar to varchar

    Also, at least on SQL Server 2012 SP4, you can't CONVERT an nvarchar to image, thus this seems to imply more so that your original data type was varchar.

    Thom~

    Excuse my typos and sometimes awful grammar. My fingers work faster than my brain does.
    Larnu.uk