Falling world : 無料・フリー素材/写真
Falling world / Ronald van der Graaf
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | The high-end flash (HVL-56AM) has a strobe function meaning it can fire multiple flashes during one exposure.I set it up to flash with a frequence of 30 hertz, so 30 flashes per second and to stop after 10 flashes.This makes the total flash period 10/30 = 1/3 second. I set the shutterspeed of the camera to the same value.I made several objects fall from a hight of about 2,5 meters.Shots are best taken in a darkish environment so the flash is the only light source on the falling object.Because the flash fires 10 times in theory you can get the object 10 times in the same frame. But then you have to get everything right:1. Precise release moment. 2. Allowing time for the object to drop into the frame.3. Have the object drop more or less straight down.4. Finish the exposure before the object hits the ground or falls out of the frame.I managed about 5 exposures.In order to drop the object synched with the start of the exposure I used a remote control (wired) in combination with a timer delayed exposure. My timer delay (2 secs) gives 6 beeps before the exposure starts. Depending on the air-resistance of the object I let go on the 5th or 6th beep. It takes some practising but you´ll get the hang of it soon.Camera settings full manual ofcourse.Manual focus your camera first by holding the object still in the falling trajectory. AF is fast these days, but not that fast.Exposure should be fully manual to. Shutterspeed is calculated from the flash frequency and number of flashes, it must not be shorter.The amount of light is determined by the flash. I set mine to flash at 1/32 of maximum power. Times ten for a single exposure makes 10/32 = 1/3 of maximum output.With this being predetermined you only have your aperature to control the exposure (ISO fixed at 100). Set it by trial and error.Not perfect yet but it's fun trying. |
| 撮影日 | 2015-01-14 14:34:30 |
| 撮影者 | Ronald van der Graaf , The Netherlands |
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| 撮影地 | |
| カメラ | SLT-A77V , SONY |
| 露出 | f/5.6 |
| 開放F値 | f/5.6 |
| 焦点距離 | 50 mm |