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Cameras
- 1. VIDEO TECHNOLOGY Goldie Lui
- 2. WHAT IS ACAMERA? • A camera is an object that was designed to record still images that are transferred onto sheets or films • There are a many different types of cameras. Some cameras focus on taking good quality photographs whilst some focus on moving images • TRADITIONAL CAMERA: rolls of black and white or colored film • DIGITAL CAMERA: memory card
- 3. HOW DOES ACAMERA WORK? • Light reflects off the object being photographed • Light reflects off the object in different directions and hits the lens in different angles • Lens focus rays of light to a point behind the focus point which then forms a real image • The shutter temporarily moves from in front of the film and allows light to hit the film • Light hits the film causing some chemical reaction which expose the film • The shutter closes
- 4. CAMERA FUNCTIONS • EXPOSURE: Exposure is the amount of light being allowed into a camera, which then affects the film inside. The higher you set the exposure, the brighter the image and vice versa. Exposure is measured in lux seconds. There is something called the exposure triangle: Aperture: controls the area over where light enters the camera Shutter Speed: controls how long the film is exposed to light ISO Speed: controls the sensitivity of your camera‟s sensor when light is exposed
- 5. • Shutter speed:it can exaggerate or freeze the appearance of an image Slow shutter speed Fast shutter speed Information about shutter speed:
- 6. HOW DO LENSAFFECT A PICTURE • There are many different types of lens for cameras. Lens normally costs way more than camera because images are affected by the quality of the lens not the camera. • There are the more popular lens like „normal lens‟ „wide angle lens‟ and „long focus lens‟ And then there are fancier lens like the fish eye lens which is also very popular nowadays which takes images like these: http://www.cambridgeincolour.com/tutorials/camera-lenses.htm
- 7. ANALOG AND DIGITALTECHNOLOGY Digital technology is things that are converted into coding and analog is something that has been physically made to work. Analog technology has been here for decades and normally are of higher quality as when using digital technology, when converting things into coding, you bound to miss some bits out which may result in lacking the full original version
- 8. DIGITAL CAMERAS ANDANALOG CAMERAS DIGITAL: The lens captures the light of the object you are aiming towards and when you press the shutter release, the shutter opens for 1/10000 of a second to allow the light to come through and hits the sensor/mirror and converts the image into binary code which then saves onto the camera ANALOG: When you press the shutter, the film inside the camera is exposed to the light and your image is then burned onto the film and depending on how long the film is exposed to the light, the image may be under or over exposed. When taking the film out, make sure you are under dim light because bright lights may effect the image. Depending on how you want your film to look, you will need to: B&W PHOTOS: soak in water which converts the latent image to metallic silver, a stop bathe with acetic or citric acid then a fixer COLORED PHOTOS: color developers develop negative image and
- 9. QUALITY AND HIGHDEFINITION Nowadays, nearly all digital cameras are high definition and is of decent quality. Different types of cameras capture different types of imagery. If you want to take a high quality video, choosing to invest on a high quality film camera is much better when making videos where as if you buy a camera, it can do both but was not originally made for video recording meaning quality of videos will not turn up as high quality. The common high definition video mode is 720p, 1080i and 1080p. The number represents the number of horizontal or vertical lines that is displayed on the screen used to make up your image or video. The more lines, the better quality. DIFFERENCE BETWEEN 1080i and 1080p? 1080i is „interlaced‟ meaning it is not as high definition. This is because there are 2 sets of lines where it alternates between each other making the video not look as smooth 1080p is „progressive‟ and is higher definition as all 1080 lines are displayed at the same time
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- 12. SOLID STATE DISCRECORDING
- 13. CONNECTION LINE UPAND OPERATION
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- 22. INTERNET TV Internet TVis classified as a type of television device where you can watch TV programs as long as you have access to the internet. You can download and stream videos TV shows. This can mean videos and clips, movies or any sort of video content that is available on the internet
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- 24. FIRST MUSIC PLAYINGDEVICE
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- 28. PAL SECAM ANDNTSC
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- 33. DIGITAL CAMERAS There area few types of cameras. Each of them are good at different things.
- 34. DSLR DSLR stands fordigital single lens reflex camera. In a dslr camera, there is a mirror inside used to reflect the image you are pointing at in the view finder of the camera. There are many different dslr cameras but most of them do the same things. It is the lens that control how the photograph will look like and the techniques you use when taking pictures. HOW DOES IT WORK? When you want to take a picture, you may look through the view finder and when you press the shutter, the mirror flips out of the way to allow the light to pass through the lens diaphragm which then hits the “CCD” or the “CMOS” sensor which then captures the image and is immediately converted into a binary code that then makes up an image
- 35. VIDEO CAMERAS • It can shoot 3D • Good for movement • Better sound quality then a dslr
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- 38. TYPES OF VIDEOFILES
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- 40. TYPES OF PHOTOGRAPHYFILES
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- 42. MACS Apple technology carriesmacs. Their company is one of the biggest companies in the world and is very popular amongst the professional industry. ADVANTAGES: • There is less chance of getting viruses DISADVANTAGES: • High quality operating system, primary • It is overpriced soft ware and third party operator • Many softwares won‟t work on a mac • Macs normally last way longer unless it is sold by apple • Very easy to update soft wares • When your mac needs repairing, you • Very easy to transfer files to other mac have to go back to apple to fix it computers • You cannot take batteries out of • Work flow is more convenient things meaning if the battery dies, • Speed of processor is very fast you will have to go to mac • A lot of internal space
- 43. PC PC stands forpersonal computer. The first pc was produced by IBM and most brands today like sony, samsung fujitsu etc. make PCs. ADVANTAGES: DISADVANTAGES: • You won‟t need to go to your • A lot of the time, you will brand store to buy extras or need to buy a microphone, replacements for your webcams, usb flash drives, computer as many places keyboards, monitors, routers would sell the same things etc. • Memory storage can easily • The industry uses mostly be added on macs
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- 45. FINAL CUT PRO Finalcut pro is a very popular editing program amongst the industry. The final cut pro (pre x) was mainly targeted towards professionals as it could do a lot with special effects and editing in general. This version took time to get use to and you would have to learn how to use it. The newer final cut pro x is a way easier to use version of the final cut pro (pre x) as it is more similar to imovie. This program is no longer targeted towards professionals as you couldn‟t do as much compared to the final cut pro (pre x) and more towards everyone.
- 46. ADOBE PREMIERE Adobe premiereand adobe premiere pro are really good editing soft wares for both mac osx and windows. It is the equivalent of final cut pro