Flash photography is widely used in professional studios due to its high intensities and the resulting short exposure times. However, most multispectral image acquisition systems use continuous light sources. But since flashguns exhibit several advantages over heat light sources, namely high intensities at short firing times, low heat production and small aperture stops, we developed a multispectral flash acquisition system: We use a multispectral camera with a bandpass filter wheel and sequentially acquire grayscale images, which are then combined into a multispectral image. For each filter wheel position, we trigger the flash. The colorimetric analysis of the estimated spectra shows that flash light multispectral imaging performs comparably to a heat light source system, with a mean color error of ΔĒ₀₀ = 1.594. We consider several aspects specific to flash light sources, namely the spectrum, repeat accuracy, illumination uniformity, calibration of the system, interference stripes and synchronization.