Spectral imaging diagnostics that view the full plasma cross section are used on MAST with sensor resolutions and frame rates of up to 256 x 512 chords and 130 Hz, respectively. The incident and solid angles of filter illumination are fully controllable. Image splitting and spectral selection with separate filters are performed in the telecentric region of the optics, whereas quasicontinuous polychromatic selection is achieved with a single filter in the convergent region. The versatility is investigated in exploiting the diagnostic techniques facilitated by neutral beam injection. Three color image dissection, detection of impurity charge exchange emission and Balmer-alpha beam emission are demonstrated. In another application it has been possible to use a single narrow band filter to image the spatially varying Doppler shifted emission from an inclined neutral beam even though the spatial variation well exceeds the filter bandwidth.