jpeg quality

[Roberto Stecco]

hi list,
I need to use jpeg format images for the output in my map. But the
quality of the image is very bad.
Can anybody give me any advice to improve it? this is a piece of my
mapfile...


        ...

        OUTPUTFORMAT
                NAME             jpeg
                DRIVER             "GD/JPEG"
                MIMETYPE         "image/jpeg"
            #    IMAGEMODE         RGB
                IMAGEMODE         RGBA
                EXTENSION         "jpeg"
                FORMATOPTION     "QUALITY = 100"
        END

        ...

thanks in advance

roberto