Tuesday, 21 September 2010
Camera Test
What are the two effects of increasing video gain?
allowing the camera to let in more light, and making the picture quality look grainy.
What should the shutter speed usually be set to?
50
When should you increase shutter speed and what is the side effect of doing this?
when you want to be able to create a slow motion picture, but the side effect is that the lighting quality will be poor unless shot in bright lighting.
What is the purpose of doing a white balance?
to make sure the colour of the motion picture is correctly lit.
What is the effect of increasing audio gain?
the volume is increased.
Describe the stages of focusing a camera?
press the focus button, and then to make sure the focusing has been properly done, press the expand focus and adjust if needed.
Why would you use the ND filter?
you would use it when you wanted more definition in your picture when filming outside, for example you would use it if you wanted to film the clouds.
If you are shooting in a dark location, would the exposure better at F1 or F8?
F1
allowing the camera to let in more light, and making the picture quality look grainy.
What should the shutter speed usually be set to?
50
When should you increase shutter speed and what is the side effect of doing this?
when you want to be able to create a slow motion picture, but the side effect is that the lighting quality will be poor unless shot in bright lighting.
What is the purpose of doing a white balance?
to make sure the colour of the motion picture is correctly lit.
What is the effect of increasing audio gain?
the volume is increased.
Describe the stages of focusing a camera?
press the focus button, and then to make sure the focusing has been properly done, press the expand focus and adjust if needed.
Why would you use the ND filter?
you would use it when you wanted more definition in your picture when filming outside, for example you would use it if you wanted to film the clouds.
If you are shooting in a dark location, would the exposure better at F1 or F8?
F1
Tuesday, 14 September 2010
The impact of the digital signal
Digital television signals allow files to be compressed, and because of this it has changed broadcasting radically. It has made things such as editing, television, and storing files better. The allowance of being able to compress files means that media files can now be put on smaller devices such as phones e.g. Files such as movies can be compressed and put on 8GB IPods, phones and portable MP4 devices. TV has changed for the better as well, as we are now able to receive more than the 5 standard terrestrial channels on TV, which is transmitted on one bandwidth which uses a multiplex. The quality of picture and sound has improved significantly, although some may argue that point. Sound and picture quality has been enhanced due to files not loosing there quality when compressed so that it can be put on other devices such as DVD’s. Blue ray discs have more storage capacity and so can store a higher quality of video.
Digital television signals has created a long path for more and better technology to come out, which is beneficial for audiences and consumers. It has allowed broadband which has lead to internet TV, we can pause and record live TV when it suits us, and we can have media on our phones.
Digital television signals has created a long path for more and better technology to come out, which is beneficial for audiences and consumers. It has allowed broadband which has lead to internet TV, we can pause and record live TV when it suits us, and we can have media on our phones.
Aspect Ratio and TV motion
What is aspect ratio?
Aspect ratio is the different screen sizes, videos are shot in. The common sizes are 4:3 and 16:9. For the last 50 years films have been shot in 16:9 wide-screen, but viewers had only been able to watch it in slandered 4:3 screen, but in the last decade or so wide-screen screen TV has become available, Improving Peoples television viewing.
Pan and Scan
Pan and scan is the method adjusting a wide-screen shot to a standard 4:3 shot used for stranded televisions. The method involves cropping the film in a way that the important aspects from the scenes in the shot are not affected. Normally the insignificant parts in a shot are cropped out. The picture to the right is a good example or pan and scan. (Picture from
Pillar-box
Pillar boxing is the opposite method of pan and scan. It’s a screen shot that wasn’t shot in wide-screen but is then formatted to play in wide-screen.
TV motion and Pixels
Pixels – pixels are tiny colourful squares that form together to form a still picture. When a still image is divided into a collection of little dots, our brains take in the arrangement of the dots to form a still image. The more pixels in a picture the better quality the turn out of the picture is. There are 25 frames per a second in films in the UK.
The TV screen
A video camera divides up an image into horizontal scan line, which makes up every single frame; this is then transmitted to our televisions. Different countries have different standards or systems of lines per a second and different numbers of frames per second.
Aspect ratio is the different screen sizes, videos are shot in. The common sizes are 4:3 and 16:9. For the last 50 years films have been shot in 16:9 wide-screen, but viewers had only been able to watch it in slandered 4:3 screen, but in the last decade or so wide-screen screen TV has become available, Improving Peoples television viewing. Pan and Scan
Pan and scan is the method adjusting a wide-screen shot to a standard 4:3 shot used for stranded televisions. The method involves cropping the film in a way that the important aspects from the scenes in the shot are not affected. Normally the insignificant parts in a shot are cropped out. The picture to the right is a good example or pan and scan. (Picture from
Pillar-box
Pillar boxing is the opposite method of pan and scan. It’s a screen shot that wasn’t shot in wide-screen but is then formatted to play in wide-screen.
TV motion and Pixels
Pixels – pixels are tiny colourful squares that form together to form a still picture. When a still image is divided into a collection of little dots, our brains take in the arrangement of the dots to form a still image. The more pixels in a picture the better quality the turn out of the picture is. There are 25 frames per a second in films in the UK.
The TV screen
A video camera divides up an image into horizontal scan line, which makes up every single frame; this is then transmitted to our televisions. Different countries have different standards or systems of lines per a second and different numbers of frames per second.
Broasdcast Systems
Broadcasting means sending out media to a large amount of people or a whole area. TV has a long broadcasting history dating all the way back to the 1920s.The late John Baird, whom was born in 1888, was the first to broadcast televised moving pictures in 1927, and became BBC’s (BBC was the world’s first national broadcasting company) first televised programme in 1928. Naturally as time passed, technology improved, especially after World War Two when broadcasting had stopped for 6 years. The first colour TV broadcast was in 1953, and by 1968 there were around 15 million TV’s in the UK which was a big difference compared to the 1.4 owned in 1952. From there TV broadcasting expanded and two channels were added onto terrestrial TV, and different forms of broadcasting were introduced, such as satellite, cable, terrestrial, digital and most recently internet streaming.
Terrestrial TV- doesn’t involve cables or satellites, and was used in the beginning of TV. It involved using radio waves to send signals to and from antennas or aerials. It’s not the best way to broadcast nowadays because waves do not bend around obstacles, and so involves playing about with the antenna or aerial to pick up a signal. There are more disadvantages with terrestrial TV than any other form of broadcasting for example:
• Sometimes Signal dips in and out leading to poor quality
• Interference-bad weather has big effect on the signals transmitted
• Terrestrial TV uses a bandwidth, which limits the signals transmitted causing less channels to be broadcast particularly analogue.
Although there are many disadvantages with terrestrial TV, it was the first form of broadcasting and from it; other better forms of broadcasting have been able to evolve, although two of the other forms charge for broadcasting. BBC is well known for its boradcasting Via Terrestrial TV.
Satellite- SKY is a very well known British satellite broadcasting company. Satellite broadcasting uses satellites placed in space to orbit the earth which pick up signals and then send them to satellite dishes placed on the outside of homes. As well as satellite broadcasting covering a mass area it’s also beneficial for audiences in the following ways:
• You don’t have to play around with an antenna trying to pick up signal, but instead is available wherever you are
• They provide a numerous amount of channels including interactive ones
• Television is less limited by bandwidth
• TV quality is much better and high definition is available to make your TV viewing more pleasurable, this is partly due to the useof digital signals.
• Advanced dishes come with the option to record or pause live TV, allowing the audience to watch TV when is convenient for them.TV satellite broadcasting is one of the better forms of broadcasting because subscription prices are fair and is available to all who want it, unlike cable. However satellite TV is not free, although Free sat now exists, which gives the basic channels you would recieve on didgital TV but is recieved via satelites. As well as advantages there are disadvantages too such as weather interference which results in channels freezing and signal lost in bad weather, however it doesn’t happen too often.
Cable- Virgin Media is the best example for cable TV as it is a very well known company for cable. There are many advantages.Cable TV works using signals transmitted through fixed optical fibres or coaxial cables that run in the ground to subscriber’s homes. The advantages with cable are similar to ones with Sky in that the quality of picture is better, provides interactive TV, HD channels are available, there are advanced devices that allow recording and pausing cable boxes, there is no messing around with an antenna, no weather problems and there is possibilty of getting phone services too. However the disadvantages are that if no one on your property’s street has cable then you can’t have it, and if your street does have cable then you have to go with the company who owns it, meaning that you have no choice of providers.
Digital broadcasting- A multiplex is able to transmit several channels together on one band width and is soon to replace all analog TV in the UK. This form of broadcasting comes with a lot of benefits for audiences, as it creates a variety of channels available for other people to watch, which also makes it more appealing. However it disadvantages traditional companies by introducing more competition, resulting in companies having to lower their rates for advertising. Companies also receive lower audience views because the amount of watchers is evened out over the different companies, resulting in companies not having a significantly large audience. Freeview is a form of digital broadcasting and is becoming more popular, as audiences just have to buy the box (cheap and more advanced) and need an antenna or aerial to receive a variety of free appealing channels. The ability to broadcast much more than the standard five channels is one of the remarkable breakthroughs in technology, and has benefited people much more. However as a result fewer amounts of people have decided to acquire cable or satellite, because they'll have to pay a monthly for a basic package, whereas with a freeview box they'll just have to pay for a box and then will be able to watch all the basic programmes Sky or cable have to offer.
Internet TV- Broadband is what has allowed us to now be able to watch TV on the internet. By us having broadband it allows us to have fast access to the internet, download, and watch things e.g. on YouTube without it taking forever to buffer. However broadband hasn’t been around, and has only become popular in the last five years or so. There are three forms of recieving TV on the internet, which are; buffering, streaming and downloading. Streaming retrieves the signals as you go and used to watch live footage on the internet, where as buffering takes the signals in and briefly stores it as you go to give what your watching a smooth stream.. Internet TV is one of the most recent forms of broadcasting and a great example of convergence, where two previous different technologies such as Televison and internet broadband come together. The benefits for audiences are that they can watch programmes when they want to watch them, and it is free for a majority. However even though TV internet is free, TV companies do not lose out on money and make their money back from advertisements, which is why we are forced to watch their adverts and can’t fast forward whilst watching. Although we can access sites outside Great Britain, we cannot access TV internet outside the country legally. This is because for some programmes such as American programmes, British TV channels have to buy the rights to their programmes before they can air them, once the country has rights, they can then put them on their own country’s TV internet where citizens can access them. Four on demand is well known for its allowance of watching TV on the internet and allows you to watch the programs they broadcast on TV that you might have missed.
Technolgy is changing rapidly and has made things such as televison a lot more convenient for audiences. We no longer have to rush back to watch certain programmes, because we can now catch up with it later, by either recording it or cathcing up with it with ondemand TV. In my opinion the most pleasurable and affordable way of recieving Television is SKY, because its affordable and more convenient for the area I live in.
Terrestrial TV- doesn’t involve cables or satellites, and was used in the beginning of TV. It involved using radio waves to send signals to and from antennas or aerials. It’s not the best way to broadcast nowadays because waves do not bend around obstacles, and so involves playing about with the antenna or aerial to pick up a signal. There are more disadvantages with terrestrial TV than any other form of broadcasting for example:
• Sometimes Signal dips in and out leading to poor quality
• Interference-bad weather has big effect on the signals transmitted
• Terrestrial TV uses a bandwidth, which limits the signals transmitted causing less channels to be broadcast particularly analogue. Although there are many disadvantages with terrestrial TV, it was the first form of broadcasting and from it; other better forms of broadcasting have been able to evolve, although two of the other forms charge for broadcasting. BBC is well known for its boradcasting Via Terrestrial TV.
Satellite- SKY is a very well known British satellite broadcasting company. Satellite broadcasting uses satellites placed in space to orbit the earth which pick up signals and then send them to satellite dishes placed on the outside of homes. As well as satellite broadcasting covering a mass area it’s also beneficial for audiences in the following ways:
• You don’t have to play around with an antenna trying to pick up signal, but instead is available wherever you are
• They provide a numerous amount of channels including interactive ones
• Television is less limited by bandwidth
• TV quality is much better and high definition is available to make your TV viewing more pleasurable, this is partly due to the useof digital signals.• Advanced dishes come with the option to record or pause live TV, allowing the audience to watch TV when is convenient for them.TV satellite broadcasting is one of the better forms of broadcasting because subscription prices are fair and is available to all who want it, unlike cable. However satellite TV is not free, although Free sat now exists, which gives the basic channels you would recieve on didgital TV but is recieved via satelites. As well as advantages there are disadvantages too such as weather interference which results in channels freezing and signal lost in bad weather, however it doesn’t happen too often.
Cable- Virgin Media is the best example for cable TV as it is a very well known company for cable. There are many advantages.Cable TV works using signals transmitted through fixed optical fibres or coaxial cables that run in the ground to subscriber’s homes. The advantages with cable are similar to ones with Sky in that the quality of picture is better, provides interactive TV, HD channels are available, there are advanced devices that allow recording and pausing cable boxes, there is no messing around with an antenna, no weather problems and there is possibilty of getting phone services too. However the disadvantages are that if no one on your property’s street has cable then you can’t have it, and if your street does have cable then you have to go with the company who owns it, meaning that you have no choice of providers.Digital broadcasting- A multiplex is able to transmit several channels together on one band width and is soon to replace all analog TV in the UK. This form of broadcasting comes with a lot of benefits for audiences, as it creates a variety of channels available for other people to watch, which also makes it more appealing. However it disadvantages traditional companies by introducing more competition, resulting in companies having to lower their rates for advertising. Companies also receive lower audience views because the amount of watchers is evened out over the different companies, resulting in companies not having a significantly large audience. Freeview is a form of digital broadcasting and is becoming more popular, as audiences just have to buy the box (cheap and more advanced) and need an antenna or aerial to receive a variety of free appealing channels. The ability to broadcast much more than the standard five channels is one of the remarkable breakthroughs in technology, and has benefited people much more. However as a result fewer amounts of people have decided to acquire cable or satellite, because they'll have to pay a monthly for a basic package, whereas with a freeview box they'll just have to pay for a box and then will be able to watch all the basic programmes Sky or cable have to offer. Internet TV- Broadband is what has allowed us to now be able to watch TV on the internet. By us having broadband it allows us to have fast access to the internet, download, and watch things e.g. on YouTube without it taking forever to buffer. However broadband hasn’t been around, and has only become popular in the last five years or so. There are three forms of recieving TV on the internet, which are; buffering, streaming and downloading. Streaming retrieves the signals as you go and used to watch live footage on the internet, where as buffering takes the signals in and briefly stores it as you go to give what your watching a smooth stream.. Internet TV is one of the most recent forms of broadcasting and a great example of convergence, where two previous different technologies such as Televison and internet broadband come together. The benefits for audiences are that they can watch programmes when they want to watch them, and it is free for a majority. However even though TV internet is free, TV companies do not lose out on money and make their money back from advertisements, which is why we are forced to watch their adverts and can’t fast forward whilst watching. Although we can access sites outside Great Britain, we cannot access TV internet outside the country legally. This is because for some programmes such as American programmes, British TV channels have to buy the rights to their programmes before they can air them, once the country has rights, they can then put them on their own country’s TV internet where citizens can access them. Four on demand is well known for its allowance of watching TV on the internet and allows you to watch the programs they broadcast on TV that you might have missed. Technolgy is changing rapidly and has made things such as televison a lot more convenient for audiences. We no longer have to rush back to watch certain programmes, because we can now catch up with it later, by either recording it or cathcing up with it with ondemand TV. In my opinion the most pleasurable and affordable way of recieving Television is SKY, because its affordable and more convenient for the area I live in.
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