Name: ISO、快門速度與光圈大解密｜新手攝影曝光基礎教學！ (ISO, Shutter Speed and Aperture Explained | Exposure Basics for Beginners)
Uploaded: 2026-03-14T08:52:42.000Z
Duration: 3 min 31 s

A photograph is the delicate balance of shutter speed, aperture and ISO.

照片是快門速度、光圈和 ISO 的微妙平衡。

關係子句

These are the camera settings that come together to emphasize an aesthetic, create a style to make the image.

這些是相機設定，它們結合在一起以強調美學，創造一種風格來塑造影像。

Timing, depth of field, light sensitivity, all three are equally important.

時機、景深、光線靈敏度，這三者同等重要。

But in order to balance these camera settings, you must prioritize the exposure trinity in a way that best presents your subject.

但為了平衡這些相機設定，你必須優先考慮曝光三要素，以最佳方式呈現你的拍攝主體。

For the sake of simplicity, we're going to show each image individual camera setting and the way that it affects an image.

為了簡單起見，我們將個別展示每個影像設定以及它如何影響影像。

Shutter speed is the measured time of an image.

The moment between the opening and the closing of the camera shutter.

相機快門打開和關閉之間的瞬間。

We've got Jake here in a very windy environment.

我們請到 Jake 在一個風很大的環境。

To freeze this motion, we need to use a very high or fast shutter speed.

為了凍結這個動作，我們要用非常高或快的快門速度。

But if we want to emphasize motion blur of the hair, we we'll want to do just the opposite.

但如果我們想強調頭髮的運動模糊，我們就要做完全相反的事。

A low or slow shutter speed will give us the opposite effect.

低速或慢速的快門速度會給我們相反的效果。

So the higher or faster the shutter speed, the more likely you'll be able to freeze action.

所以快門速度越高或越快，你就越有可能凍結動作。

The lower or slower the shutter speed, the more likely you'll be to blur the motion.

快門速度越低或越慢，你就越有可能模糊動作。

Aperture is the size of the hole the that lets light into the camera.

光圈是讓光線進入相機的孔洞大小。

Here we have a very nice portrait setup for Jake.

這裡我們為 Jake 準備了一個很棒的肖像設置。

By changing our aperture, we're able to specify how much of our lovely subject stays in focus.

透過改變光圈，我們就能指定我們可愛的主體有多少部分保持對焦。

Shooting at a larger aperture, like f2.8, the smaller the number, the larger the hole, creates a very narrow area of focus, stopping the aperture down to say, F20.

使用較大的光圈拍攝，例如 f2.8，數字越小，孔洞越大，會創造一個非常窄的對焦區域，將光圈縮小到例如 F20。

The larger the number, the smaller the hole, gives us greater depth of field.

數字越大，孔洞越小，景深就越大。

With more of the subject and background in focus.

The larger the F stop, the more shallow the depth of field.

The smaller the aperture, the more overall focus in the image.

ISO is the chosen light sensitivity of the film or sensor.

ISO 是菲林或感光元件所選擇的光線靈敏度。

It's Jake again in a room with ample light.

這是 Jake 又一次出現在光線充足的房間裡。

Shooting at a lower sensitivity like ISO 200 should be fine.

使用 ISO 200 這種較低靈敏度拍攝應該就可以了。

Here highlights and shadow detail are clean and virtually without noise.

這裡的高光和暗部細節都很乾淨，幾乎沒有噪點。

But when the lights go down, we'll need to raise the sensitivity to make an exposure.

但當燈光變暗時，我們就需要提高靈敏度來進行曝光。

Employing a higher ISO allows us to make photographs in this challenging scene.

使用較高的 ISO 讓我們能在這個挑戰性的場景中拍攝照片。

But it also introduces noise to the image, particularly in the midtone and shadow areas.

但這也會為影像帶來噪點，尤其是在中間調和暗部區域。

So choose lower ISOs in bright or well lit scenarios and choose higher ISOs in dark or poorly lit situations.

所以，在明亮或光線充足的場景選擇較低的 ISO，在昏暗或光線不足的情況選擇較高的 ISO。

Shutter speed, aperture, ISO, all three are equally important.

快門速度、光圈、ISO，這三者都同等重要。

If you want to make a photograph of something fast moving, you want to freeze the action, you need to shoot with a higher shutter speed.

如果你想拍攝移動快速的東西，想要凍結動作，你需要用較高的快門速度拍攝。

If you'd like to make a photograph with a shallow depth of field, open your aperture up, shutter speed and ISO.

如果你想拍攝景深較淺的照片，就打開你的光圈，快門速度和 ISO。

If you're in a dark situation, raise your ISO up, then set the aperture and shutter speed accordingly.

如果你在昏暗的環境，就提高你的 ISO，然後再相應地設定光圈和快門速度。

For more on exposure, photography and all things imaging, visit B and H. I'm photographer David Flores.

想了解更多關於曝光、攝影和所有影像的知識，請到 B and H。我是攝影師 David Flores。