erichylai 寫:
My father was a professional photographer 20 years ago. He had to take photos for night clubs, usually during opening hours. Club bosses never allow him to turn lights on when he did these shots. So he came up with a solution: his assistance would hold the flash pointed in one area, exposed part of one frame, then his assistance would point it to another area for him to expose another. His photos came out as if the lights were on.
I am not as good a photographer. I had only photoshop three exposures together so everyone eyes in the finish photo look at the camera and none of the babies cried.
Eric個方法用於室內攝影用閃燈局部加光好常用,我也用同樣方法作過嘗試,所唔同係你唔可以局部咁加光,祗可以說係個頂用閃燈在唔同位置分別咁閃幾次。
方法係周圍越黑越好,最好係全黑環境,光圈收到最細,因為可以將爆光光時間加長,快門B制,用一支細既普通閃燈,要計算閃燈output,如是所選光圈三分一既話, 你可以分三個位向缸頂閃,每閃一下,如果閃光能集中,便能減低對其他部分曝光影響,而閃光部分亦可以將那部分游過的魚影得好清楚,當閃完三次,就可以關快門,張相就會有正常曝光。
但哩個方法成功率好低,因為閃燈每閃一下都會照光一部分,因此好難做到交接位有平均曝光,而且每閃一下,D魚既位置都唔同,好難處理群游同有機會D魚在唔同位置重疊。而且長時間曝光noice control問題 係digital 既死症。
最後我改用LED做光源先作局部加光,再用閃燈配合,但見到既係從幾百張選出十幾張,而且好花時間。
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