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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. "Joytokey chinese version frequently asked questions and answers能不能劝回嘉靖，要不要扳倒严党，这是只有陆炳自己内心才清楚的事情。这件事已经过去了，不提也罢，和亚父一置气这么多日子了，他那么大的年纪，还请你多多体谅。Article 40 [Appeal] If a designated medical institution and an agency have disputes over the performance of the agreement, they may appeal to the medical security administrative department at the corresponding level, which shall mediate and deal with them in accordance with the law and regulations.