My 5N won't allow me. I can switch to Intelligent Auto Mode, but from there it won't go to Special Effects.Dioptrick, Colour isolation works on all lenses, however I do find that the wider the angle of the lens the less coverage there is in the colour isolation.
I don't know how to check for flaring, but I sure like this little lens. Even came with a B&w UV filter. I do find it a little tricky to push the stop-down tabs when shooting above 1.4.