【Week 3】--- Aperture

Today, we learn about the aperture of the camera. An aperture is a hole or an opening through which light travel. The aperture determines how collimated the admitted rays are,which is of great importance for the appearance at the image plane. Aperture controls the amount of light entering the lens and controls depth of field in your camera.

When aperture is big, the background of the picture is clear.

When aperture is small, the background of the picture is blur.

A lens typically has a set of marked called "f-stops". It's refers to the focal length of the camera.

 

When the aperture is big, the light going through the camera is less.

When the aperture is small, the light going through the camera is more.

In this lesson, we have to do two exercise that use our camera and the aperture of the lens. The lessons told us about how to use the and the different between big aperture and small aperture.

This is the first aperture exercise that about the size of the aperture that affect the light of the picture.

Here is the exercise I did,

f/5      1SO 200                1/500

f/5.6          ISO 200           1/500

f/8    ISO 200                    1/500

f/11        ISO 200 1/500

f/16        ISO 200 1/500

f/22        ISO 200 1/500

f/32        ISO 200 1/500

The second exercise is about when we turn the aperture to a big size, we can still control the shutter speed to have the same exposure.

Here is my second exercise,

f/5          ISO 200 1/500

f/5.6      1SO 200                1/400

f/8          ISO 200 1/200

f/11        ISO 200 1/100

f/16        ISO 200 1/50

f/22        ISO 200 1/25

f/32        ISO 200 1/13

In this exercise, I learn about one of the function on the camera. I felt quite fun when I first time turn my camera from auto to manual. Now only I know what is the aperture of a camera and use it whenever and wherever I want to take a picture.

--- Aderline ---

---  19.04.2013 ---