Used but in good working condition. The microprocessor controlled Gossen Luna-Star F2 automatically measures and analyzes both flash and continuous light in a single metering operation and displays the reading clearly, in large, easy to read numerals. It also measures both incident and reflected light for particularly accurate exposures, especially with subjects that are either very bright or very dark.A series of flash synchronization speeds from 1 sec. to 1/1000 sec. allows you to control the exposure of flash shots that utilize several different sources of light. The Luna Star F2's outstanding ease of use with just six buttons covers all of the operations required while the ergonomic design allows one-handed use.Incident and reflected light metering for ambient and flashRotating head with diffuser domeDigital display with additional analog f/stop scaleAutomatic power "switch-off" with storage of all values retained in memoryAn optional spot attachment reduces the measuring angle from 30 to 5° which helps when analyzing subject contrast-----FULL SPECSGossen Luna-Star F2 SpecsMeasuring SystemIncident or reflectedMeasuring ModesAmbient and flash (cord, cordless) - incident and reflected (30 degrees); Spot metering available with optional 5 Degree Spot-Attachment (#4112)Receptor HeadRotating (270 degrees), interchangeable receptorAperture/Shutter PriorityShutter speed priorityDisplay ReadoutDigital LCD plus analogISO Range3 to 8000f/Stop Display Rangef/1.0 to 90.9Shutter Speed - Ambient1/8000sec. to 60min.Shutter Speed - Flash1/1000 to 1sec. (includes 1/90sec)EV Range (ISO-100)EV -2.5 to 18Cine Speeds8,12, 16, 18, 24, 25, 28, 30, 32, 36, 48, 64fpsExposure MemoryNoShadow/Highlight CalculationNoBrightness DifferenceNoFlash to Ambient RatioNoMultiple FlashYes, up to ten flashesExp. Compensation AdjustableYes, -7.9 to +7.9; Extension factor: 1 to 239Power Source9V alkaline battery; Battery level display; Auto shut-off after approx. two minutes; Values retained in memoryDimensions2.6 x 5 x 1" (69.85 x 127 x 25.4mm) WDHWeight4.4 oz (1425 g)