canon Macro light ML-3

Designed for close-up photography with the EF 50mm, 65mm and 100mm Macro lenses. A good option for Type B cameras. A-TTL flash mode. Guide number of 11 (ISO 100m). Two switchable flash tubes (use either or both) for shadow control. Modelling lights. Works with all EOS models except digital. Type: two-lamp TTL automatic ring flash for close-up photography Connection: clip-on type with direct contacts and lock Guide number: 11 (ISO 100:m) or 36 (ISO ft) Flash coverage angle: more than 80°, both vertically and horizontally Recycling time: alkaline batteries - 0.2 - 13 secs Ni-Cd batteries - 0.2 - 6 secs (Interval between firing flash and ready lamp relighting, with new alkaline or fully-charged Ni-Cd batteries) Flash duration: 1.5 ms or less Flash control system: TTL automatic control by metering light reflected from the film plane. Provided with the automatic flash adjustment system when using fill-in flash Flash coupling range: about 20mm to 4m (0.78 in to 13.1ft) from front of flash element (at ISO 100) Ready lamp (red): glows when flash is sufficiently charged. As soon as it glows, the camera automatically switches to flash circuit. Also serves as the test firing button Auto check lamp (green): glows for approx. two secs after actual firing of flash when subject is correctly exposed Focusing lamp: by pressing the the focusing lamp button, two small lamps light up for approx. 20secs. Effective illumination range: about 0.2 to 1m (0.7ft to 3.3ft) Flash head: two main flash tubes are used on left and right sides. One tube flash is possible by illumination changeover switch Save-energy function: if the flash is not used for approx. five minutes, power to the flash unit is automatically cut off