18 Jan 2010, 09:42
There is no watermark function in imagevue unfortunately. We were looking into this some time ago, but there were so many "pitfalls" - For instance, it is very inconsistent what servers are actually able to watermark images (it requires an extension) ... Also, watermarking requires re-generation of JPG file, meaning duplicate compression of JPG images, which will lead to quality loss.
Best option is to use an app like irfanview to apply watermarks client-side on original images in the same process as resizing for the web, prior to upload into the gallery.