Camera Test

1. What are 2 effects of increasing video gain?
Letting more light into the picture. Making it more pixelated and grainy.

2. What should the shutter speed usually be set to?
50fps

3. When should you increase shutter speed and what is the side effect of doing this?
To shoot get smoother images. The side effect is it requires more light. It is used when you want to do slow motion.

4. What is the purpose of doing a white balance?
To set the colour balance right.

5. What is the effect of increasing the audio gain?
Increasing the volume.

6. Describe the stages of focusing a camera.
Press focus button, zoom in, focus on hair using ring, expanded focus to check,

7. Why would you use the ND filter?

8. If you are shooting in a dark location, would the exposure be better at F1 or F8?
F1 because it takes in more light.

Camera test 21/9/10

1. What are 2 effects of increasing video gain?
2. What should the shutter speed usually be set to?
3. When should you increase shutter speed and what is a side effect of doing this?
4. What is the purpose of doing a white balance?
5. What is the effect of increasing the audio gain?
6. Describe the stages of focusing a camera.
7. Why would you use the ND filter?
8. If you are shooting in a dark location, would the exposure be better at F1 or F8? Why is this?

How Has Digital TV Changed Broadcasting

Television broadcasting has been radically changed by digital TV. Digital is miles ahead of analogue because of the sheer amount of things it can do. Digital signals take up less space than analogue signals, meaning that more channels can be compressed into them. They also offer a huge range of features such as interactive program guides and better picture quality. Digital broadcasting has opened TV up to masses of people who might never have watched it before because there is now so much more variety, meaning that it's more likely to please a wider amount of people.

Aspect Ratio

Aspect ratio is the size of the image you are watching. The main two aspect ratios are fullscreen (4:3) and widescreen (16:9). Since the 1950s, most films have been shot in widescreen. However, when shown on a 4:3 TV set they are often panned and scanned so they can fill the image. This means only a 4:3-sized portion of the widescreen image is shown, usually where the main action in the frame is taking place, which pans to keep this portion in the frame:

This completely cuts off the rest of the image, ruining the composition of the shots and potentially causing the audiences to miss vital elements of the frame. The best way to show widescreen images of fullscreen TVs is to show them letterboxed, which preserves the image with black bars at the top and bottom of the screen:
When a 4:3 image is displayed on a widescreen TV it is often stretched to fill the screen, making the image appear stretched. The best way to show the image is to have it pillarboxed with preserves the image with black bars on either side.

TV Pixels:

A still image is made up of pixels which your brain assembles into an image. The quality or resolution of the image increases with the amount of pixels you have.

TV Motion:

TV is a series of still images which are played one after another at a fast speed to give the illusion of one fluid moving image. The standard speed for British TV is 25 frames per second

The TV Screen:

Moving images are divided into horizontal lines of pixels called scan lines, which are transmitted to televisions. British TV shows 525 rows.