- What are the 2 effects of increasing video gain?
- What should the shutter speed usually be set to?
- When should you increase shutter speedand what is a side effect of doing this?
- What is the purpose of doing a white balance?
- What is the effect of increasing the audio gain?
- Describe the stages of focusing a camera.
- Why would you use the ND filter?
- If you are shooting in a dark location, would the exposure be better at F1 or F8?
Tuesday, 21 September 2010
Camera Test
Tuesday, 14 September 2010
Digital TV signals
Digital television signals:- Better picture quality and audio
- Records TV
-Interactive features
-On demand
-Ability to compress
-HD
Digital has enabled higher quality and audio aswell as making new features such as interactive TV and 'on demand' where you can watch what you want and when you want. Furthermore digital provides compression and mulitplexing which allows multiple channels and more choice and compitition. In general digital is alot more faster compared to anolouge and you can edit with one click.
- Records TV
-Interactive features
-On demand
-Ability to compress
-HD
Digital has enabled higher quality and audio aswell as making new features such as interactive TV and 'on demand' where you can watch what you want and when you want. Furthermore digital provides compression and mulitplexing which allows multiple channels and more choice and compitition. In general digital is alot more faster compared to anolouge and you can edit with one click.
The size of the screen e.g 16:9 (Widescreen) 4:3 (Square television/ standard)
Normal screen
Widescreen
Widescreen uses pan and scan which crops out the edges when played on a 4:3 screen. So you can’t get the full essence of the shot. On the other hand it lets you view in a wider shot which shows the shot more clearly and the emotion of the character. If you are watching a 4:3 on a widescreen TV you have black/grey gaps which are called letterboxing.
In the UK TV plays on average 25 frames per second to creating a smooth moving picture.
Still images:frames
Resolution: How many pixels there are in an image. When there are more pixels the image is better quality.
The TV screen:
The TV screen is made up of hundreds of lines called scan lines. Different countries use slightly different numbers of lines per screen and different numbers of frames per second. Film works on the same principle as TV and used 24 per second which is slightly more jerky.
Normal screen
Widescreen
Widescreen uses pan and scan which crops out the edges when played on a 4:3 screen. So you can’t get the full essence of the shot. On the other hand it lets you view in a wider shot which shows the shot more clearly and the emotion of the character. If you are watching a 4:3 on a widescreen TV you have black/grey gaps which are called letterboxing.
In the UK TV plays on average 25 frames per second to creating a smooth moving picture.
Still images:frames
Resolution: How many pixels there are in an image. When there are more pixels the image is better quality.
The TV screen:
The TV screen is made up of hundreds of lines called scan lines. Different countries use slightly different numbers of lines per screen and different numbers of frames per second. Film works on the same principle as TV and used 24 per second which is slightly more jerky.
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