5. Measurement
2-5 Flash analyzing function
When measuring flash light, the shutter speed and F stop value (combining ambient light and flash light: total amount of light) are displayed on the LCD screen and the ambient light and flash light are each displayed as separate values along with the total amount of light (combined flash and ambinent) on the analog scale. In addition, the ratio of flash light to the total amount of light is displayed as a percentage (in 10% steps) at the sametime. The ratio of flash to the total amount of light is useful when a desired flash to ambient lighting ratio is needed.
< Example >
Under certain conditions, if the flash light output is 60% and the available light output is 40%, the LCD screen will display the flash measured value on the analog scale with a faster blinking icon than the total exposure blinking icon.
1.To emphasize the ambient light (to create a more natural lighting condition) increase the ratio of ambient light,(use the Jog wheel ⑤ )by changing the shutter speed to a slower setting.The ratio of flash light in the total exposure will be reduced (as shown in the diagram to the right - 20%).The analog scale also shows the ambient output to be about 2.5 stops higher than the flash light output.As a result,images will exhibit a natural lighting quality with flash filled shadows without an over powering presence of flash.
Percentage of flash in total exposure
Ambient | Flash Measured f stop | ||
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2. To reduce the effect of ambient light decrease the |
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ratio of ambient light, (use the Jog wheel) by |
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changing the shutter speed to a faster setting. The |
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ratio of flash in the total exposure will be increased |
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(as shown in the diagram to the right – 80%) The | (Display in spot viewfinder) | |
analog scale also shows the flash light output to |
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be about 1.5 stops higher than the ambient light |
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output. |
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Reference:
•Slower shutter speeds allow more available light to reach the film or digital camera sensor, and faster shutter speeds reduce the amount of available reaching the film or sensor.
•The settings above are made by adjusting the ambient light by the shutter speed. It is also possible to modify the ratio by adjusting the flash light (when changing the distance between the flash and the subject or when changing the amount of light of the flash). When using this method,