Four practical methods were evaluated for determining the spectral responsivity of a Nikon D200 digital camera: (1) Direct measurement by exposure to a monochromator sequence at 5nm intervals; (2) LED colour target with 36 luminous circular patches; (3) filtered illumination, using 16 transmission filters of 20nm bandwidth; (4) filtered camera, using the same set of filters. Taking the monochromator measurements as the reference, the results of the other three methods showed a good correspondence, but systematic differences were observed for fluorescent illumination. Because of the wavelength shift in filter transmittance with angle of incidence, it is recommended that sources with smooth spectral power distributions should be used for filter-based characterisation.