Pixar in a Box: Virtual Cameras Simple pinhole camera
What is the effect of changing the aperture size?

1. Decreasing the size of the aperture makes the image because light reaches the image plane.

2. the size of the aperture makes the image less blurry.

3. Why is the image less blurry?
a. The light is refracted more through the pinhole.
b. The image is darker, so you can't see the blurred regions.
c. The light hitting each point in the image plane comes from a narrower range of points in the scene.
Why does the image appear upside down?

1. Rays of light hitting this point on the object will be moving .

2. The light from this point that passes through the pinhole will be moving .

3. As this light passes through the pinhole, it will towards the bottom of the image.
The effect of focal distance

1. Increasing the focal distance makes the field of view . This means that objects in the image appear .

2. Increasing the focal length also causes images to appear . This is because the rays of light are spread out by the time they hit the image plane.

Camera lenses
Use the snipping tool or screenshot (‘ctrl + show windows button’ for chrome books) to take a picture of the each completed scenario (all 8). You can size them as necessary when you paste them here.

Depth of field
Use the snipping tool or screenshot (ctrl + show windows button for chromebooks) to take a picture of the each completed scenario (all 7). You can size them as necessary when you paste them here.

Scene composition
Use the snipping tool or screenshot (ctrl + show windows button for chromebooks) to take a picture of both scenes when are finished. Paste them here and answer the questions.

1. Increasing the focal length has the effect of .

2. Notice that in both scenes, the character in the foreground remains the same height. To achieve this, as we increase the focal length we have to move the camera the scene.
3. As the focal length increases, the background appears to move the camera.

4. If we keep the focus on the character in the foreground, as the focal length increases, the background appears blurred.

5. How does using a long lens (such as a 200 mm lens) affect the feeling of a scene?

6. When would you want to use a wide angle lens (such as 28 mm lens)?

7. If you wanted a viewer to focus on a particular element in a scene, what sort of lens and f-stop might you use?

8. When might you want more of the background to be in focus?