For all Canon SLR and D-SLR users out there who are into macro-photography, here is a treat from Canon. The Canon Macro Twin Lite MT-24EX, a flash designed for macro-photography which gives you advanced lighting capabilities not available with traditional macro ring flash systems.
Two separate and swiveling flash heads can be manipulated to suit the lighting environment. The flash heads can either be focused on the subject or can be aimed away from the subject or on to bounce cards for softer lighting. There is even the option of removing them from the camera and mounting them on light stands.