hmi, metal halogen

HMI (hydrargyrum medium-arc-length plus iodide) lamps are at this time one of the best of the Discharge Lamps for shooting. They are daylight-balanced, 5,600-to-6,000K, with a 3,200K option, relatively low pressure and short Hot Restrike Time with high output and high CRI. HMI (still sometimes called Metal Halogen) performs minor miracles, especially when balancing strong daylight for color shooting. Tip: Test Color Temperature at frequent intervals and keep Color-Correction gels handy.