This silicon photo diode measures EV2 to EV10 with both reflected and incident light readings in 1/3rd stop increments. Aperature scale from f/1.4 to f/32, and film speeds ISO 12 to 1000.Powered by 1 9v battery, not included, Features flash synch socket, rotating sensor, removeable diffuser, and ready light.
2 Sisters of Texas 
