[教學]黑卡101，中英對照版

有外國人問什麼是黑卡，英文菜，只好請老婆幫我翻譯，供大家參考

Because of the huge contrast of the picture, it is not easy to have normal exposure on all parts of the picture.

The most common way of shooting this kind of picture is by doing double exposure or HDR, but it has to be taken more than twice before getting a satisfied photo.



In Taiwan, a popular way of capturing good landscape picture is called "shaking the black card". Capturing a good picture can be done in one shot.

A black card is just a regular cardboard paper. The key point is the color black. Black absorbs light. Therefore, the camera will not capture the black card.

When shooting, use spot metering to measure the sky and the sea level. In the same aperture value, I have found that the sky needs four seconds shutter time, but 40 seconds for the sea level.

If I use 40 seconds shutter time to make sure the sea level is exposed normally, the sky will be over exposed.

To solve this problem, I used a black card. First, I covered the sky using a black card. Shook the black card gentlely in front of the camera for 36 seconds. Removed the black card, exposed it for 4 seconds and then closed the shutter. By doing so, I got a photo with normal exposure.

You may want to know the reason why I shook the black card. If you don't shake the black card, it will leave a very clear line on your photo.

When using a black card, an abundant exposure time is needed. Filter ND8 or ND64 is suggested while using the black card.

Example / 範例：



因為反差過大，要將各個部份曝光正常相當不容易。一般作法，有重複曝光或是HDR，但都需拍攝至少兩次。

在台灣，流行一種叫做「搖」黑卡的拍攝方式，可以一次就拍攝完成。

黑卡，就是一般的紙，重點是要黑色，黑色會吸光，如此相機才不會拍攝出這片卡的顏色。

拍攝時，使用點測光，測量天空與海面的部位。在一樣的光圈值，我測得天空需要4秒的快門時間，但海面需要40秒。

因此若要一次拍攝完成且海面要曝光正常的話，需要40秒的快門時間，但這樣天空就會過曝。

這時就可以使用黑卡，當拍攝時，黑卡遮去天空的部份，"輕輕"晃動黑卡，直到曝光36秒時，移去黑卡，再曝光3秒，就關閉快門。如此就可以得到一張曝光正常的照片。

那為什麼要搖呢？若不晃動黑卡，影像中會留下一條很明顯的直線。

為了得到較充裕的曝光時間來使用黑卡，通常會搭配減光鏡，ND8或ND64。