Tip: For spark in a backlit portrait or silhouette, try compositions that include the light source. This can drive your meter crazy, though, so bracket your exposures.
小提示：在拍摄背光照明的人像或剪影时，试着将光源纳入构图中，但是这样会导致测光表读数不准，因此可以尝试使用包围曝光法。
The stroboscopic light source made of high-power LEDs (higher than 5w) not only can replace the mercury stroboscopic light source, but also can greatly simplify the drive circuit.
采用5w以上的大功率LED构成频闪光源，不仅可以完全替代汞灯频闪光源的功能，而且驱动电路还可以大大简化。
This method USES at least two light sensor measurements to derive information concerning both the ambient light levels and the illumination source output level for known drive conditions.
该方法使用至少两次光传感器测量，对于已知驱动条件得出有关环境光照水平和照明源输出水平二者的信息。
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