天文摄影根底知识
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang c up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
三、“亮平场〞〔flat files〕：对着“均匀光源〞，置于M档，保持在拍摄“亮场〔帧〕〞时的“焦距〞和“光圈〞，“ISO值〞可以低于亮帧1-2档，然后看测光表的读数，看见读数后再加1到2档，曝光1组。
如何制造“均匀光源〞？
〔一〕自然光：天文晨光于民用晨光交界那段时间时距离太阳隔180度处附近，拍到最亮的周边昏暗即可。
〔二〕人造光：镜头前蒙个什么白色餐桌布折个几层再拉平，然后用皮筋绑在镜头前。光源可以选择直接对着日光灯，或者白天对着室外天空远离太阳和光线剧烈变化处。
注意：“焦距〞稍许偏离无穷大问题还不大，但“光圈〞必须要一致不能改变，否那么就会挂掉。
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special in
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