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"Exposure compensation is also called EV, which is an abbreviation of Exposure Values and a quantity reflecting the amount of exposure. EV +/-commonly known as exposure compensation, it was originally defined as: when the sensitivity is ISO 100, the aperture coefficient is F1, and the exposure time is 1 second, the exposure is defined as 0, the exposure is reduced by one gear (the shutter time is reduced by half or the aperture is reduced by one gear), and the EV value is increased by 1. Increasing and decreasing exposure compensation depends on adjusting the rocker. The shooting environment is relatively dim and needs to increase brightness. When the flash cannot work, the exposure can be compensated and the exposure can be appropriately increased. "其实他在心里想，胡钊娶张二姑娘，这简直就是异想天开。杨寿全怒极，抬手起身抓起茶壶砸了过去，正砸在杨长帆额头。5. Find customers through your competitors（周六9点档·平均收视率16.8%）到今年已经过去了20年。13