User manual SEKONIC L-208 TWINMATE

[. . . ] q Keep the Lumidisc and synchro terminal cap out of reach of young children, as swallowing such objects can cause suffocation. q Never place batteries in fire, short disassemble heat or charge them. The batteries might break down, and cause an accident, injury or pollute the environment. REFERENCE: WARNING CAUTION q There is a danger of electric shock if the meter is handled with wet hands, during rain, in areas splashed by water or where there is a lot of moisture, if you use cord flash mode. Also, such action may damage the product. Table of Contents Safety Precautions Table of Contents 1. [. . . ] q A three second pause between power ON and OFF is recommended to avoid damage to the meter. 3. Auto Power OFF function 1) To conserve battery power, the meter will turn OFF about four minutes after last use. 2) Whether the Auto Power OFF function turns the power OFF or the Power button q is pressed, the settings and measured values remain stored in memory. When the Power button is pressed again the last settings are displayed. REFERENCE: · The power shuts OFF automatically after one minute when the power button is pressed and held. 6. Setting ISO film speed 1) Hold down the ISO button i and press either the Up button y or Down button u to select ISO film speed for the film being used. The new value is automatically displayed. ISO REFERENCE: · Setting value will change consecutively if the Up button or Down button is depressed for one second or longer. 4. Incident or reflected light measuring 1) To set for either incident or reflected light operation, slide the Lumisphere w mounting until it clicks. Incident light mode NOTE: Reflected light mode Setting operation q Always use the Lumisphere mounting for setting. Never use organic cleaners (like thinner or benzene) to clean Lumisphere. 2. The mode switching sequence is as follows. MODE Shutter Speed Priority mode (ambient light) [see page 10] EV mode (ambient light) [see page 11] Cord Flash [see page 14] Auto Reset Cordless Flash mode [see page 16] 4. Basic Operation 2) Interchangeably switch between EV mode and Shutter Speed Priority mode by pressing the Mode button e while holding down the ISO button i in Ambient mode. Measurement value also will be automatically calculated when a switch is made after measuring. MODE ISO REFERENCE: · Ambient light refers to continuous light like natural light (sunlight), tungsten lamps or fluorescent lamps. · After measurement, the F stop value corresponding to the shutter speed is displayed when the shutter speed changed. · If ISO film speed is altered after measuring, a corresponding aperture value will be displayed. · Even if within the measurement range of the L-308S, the exposure over symbol E. o may appear for the set shutter speed at maximum aperture value (F90) and likewise the exposure under symbol E. u may appear at the minimum value (F0. 5). If either of these symbols appears, please take the next page action. 5. The shutter angle that these speeds are based on is 180 degrees. 5. Measuring Flash Light This measuring method comprises the cord and cordless flash modes. Measure the flash light to display shutter speed and aperture value (total amount of light combining ambient light and flash light) on the LCD. 2-1 Cord Flash mode This measuring methad is used to make sure synchronization with flash units, or to measure flash bulb by connecting Synchro cord. 1) Connect the flash synchro cord to the flash synchro terminal o on the exposure meter. 2) Press Mode button e to select flash mode. cord MODE 3) Press the Up button y or the Down button u to set the shutter speed. When setting shutter speed, first check the settings to confirm that they correspond to the settings on the camera. 1/10 f stop 4) Press the measuring button r to trigger the flash. The measurement value (f stop value) will be displayed. Set shutter speed Measurement value (aperture value) WARNING q Please place in a location where an infant cannot reach and accidentally swallow the synchro terminal cap. Measurement NOTE: q There is a danger of electric shock if the meter is handled with wet hands, during rain, in areas splashed by water or where there is a lot of moisture, if you use cord flash mode. [. . . ] Measuring Light Contrast This method is used to check studio lighting or lighting unevenness. Point the Lumidisc at the main light source from the subject position and then measure. In this state now point the Lumidisc at the secondary light source and measure. 4) Determine the luminance ratio (contrast ratio) using the differrence of measuring values of the main light source and the secondary light source. [. . . ]