For professional studio use elinchrom have developed the high end elc pro hd system providing photographers with a competent reliable powerful head featuring a myriad of practical creative features the elc 500 boasts a recycling time of 06 seconds and a 15000 second flash duration while maintaining consistent colour temperature and flash power uniquely the elc pro hd features an easy to read oled display screen which indicates power flash duration and other settings navigated and co