Philips MSD200 70V/200W GY-9.5 2000h - HMI/MSR/HMP/OMI lamps, extremely high light output, excellent colour rendering. Light output three to four times higher in comparison to filament lights. Light is generated via an arc between two electrodes, spectrum similar to daylight (between 4500 and 6500K). Constant colour temperature and colour rendering behaviour over the whole lamp life. Photographic industry halogen metal evaporation lamps provide a spectrum composed of a lot of lines, in contrast to temperature radiators, as halogen-incandescent lamps.