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Cameras Cameras Presentation Transcript

  • VIDEO TECHNOLOGY Goldie Lui
  • WHAT IS A CAMERA?• 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
  • HOW DOES A CAMERA 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
  • 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 cameraShutter Speed: controls how long the film is exposed to lightISO Speed: controls the sensitivity of your camera‟s sensor when light is exposed
  • • Shutter speed: it can exaggerate or freeze the appearance of an image Slow shutter speed Fast shutter speedInformationabout shutterspeed:
  • HOW DO LENS AFFECT 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
  • ANALOG AND DIGITAL TECHNOLOGYDigital technology is things that are converted into coding and analog issomething that has been physically made to work. Analog technology has beenhere for decades and normally are of higher quality as when using digitaltechnology, when converting things into coding, you bound to miss some bits outwhich may result in lacking the full original version
  • DIGITAL CAMERAS AND ANALOG CAMERASDIGITAL: The lens captures the light of the object you are aiming towards and when you pressthe shutter release, the shutter opens for 1/10000 of a second to allow the light to comethrough and hits the sensor/mirror and converts the image into binary code which then savesonto the cameraANALOG: When you press the shutter, the film inside the camera is exposed to the light andyour image is then burned onto the film and depending on how long the film is exposed to thelight, the image may be under or over exposed. When taking the film out, make sure you areunder dim light because bright lights may effect the image. Depending on how you want yourfilm to look, you will need to:B&W PHOTOS: soak in water which converts the latent image to metallic silver, a stop bathewith acetic or citric acid then a fixerCOLORED PHOTOS: color developers develop negative image and
  • QUALITY AND HIGH DEFINITIONNowadays, nearly all digital cameras are high definition and is of decent quality. Differenttypes 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 asif you buy a camera, it can do both but was not originally made for video recording meaningquality of videos will not turn up as high quality.The common high definition video mode is 720p, 1080i and 1080p. The number representsthe number of horizontal or vertical lines that is displayed on the screen used to make up yourimage 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 oflines where it alternates between each other making the video not look as smooth1080p is „progressive‟ and is higher definition as all 1080 lines are displayed at the same time
  • TAPES
  • HARD DRIVE RECORDINGS
  • SOLID STATE DISC RECORDING
  • CONNECTION LINE UP AND OPERATION
  • CABLES AND CORDS
  • COMPONENT AND COMPOSITE
  • ASPECT RATIO
  • BROADCAST SYSTEMS
  • TERRESTRIAL
  • DIGITAL TV
  • CABLE TV
  • SATELLITE TV
  • INTERNET TVInternet TV is classified as a type of television devicewhere you can watch TV programs as long as you haveaccess to the internet. You can download and streamvideos TV shows. This can mean videos and clips, moviesor any sort of video content that is available on theinternet
  • MULTIPLEX
  • FIRST MUSIC PLAYING DEVICE
  • COMPRESSION- LOSSLESS AND LOSSY
  • BINARY CODES
  • FILE TYPES
  • PAL SECAM AND NTSC
  • HDMI AND DVI
  • BRORADCAST WAVE FORMAT
  • DATA TRANSFER
  • NETWORK
  • DIGITAL CAMERASThere are a few types of cameras. Each of them are good at different things.
  • DSLRDSLR stands for digital single lens reflex camera. In a dslr camera, there is amirror inside used to reflect the image you are pointing at in the view finder ofthe camera. There are many different dslr cameras but most of them do thesame things. It is the lens that control how the photograph will look like and thetechniques you use when taking pictures.HOW DOES IT WORK?When you want to take a picture, you may look through the view finder and whenyou press the shutter, the mirror flips out of the way to allow the light to passthrough the lens diaphragm which then hits the “CCD” or the “CMOS” sensorwhich then captures the image and is immediately converted into a binary codethat then makes up an image
  • VIDEO CAMERAS• It can shoot 3D• Good for movement• Better sound quality then a dslr
  • ANALOG FILM CAMERAS
  • THE RED ONE
  • TYPES OF VIDEO FILES
  • MP3 AND WAV
  • TYPES OF PHOTOGRAPHY FILES
  • HARDWARE AND SOFTWARE
  • MACSApple technology carries macs. Their company is one of the biggest companies in the worldand 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
  • PCPC stands for personal computer. The first pc was produced by IBM and most brands todaylike 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
  • EDITING SOFT WARES
  • FINAL CUT PROFinal cut pro is a very popular editing program amongst the industry. The finalcut pro (pre x) was mainly targeted towards professionals as it could do a lotwith special effects and editing in general. This version took time to get use toand you would have to learn how to use it. The newer final cut pro x is a wayeasier 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 asmuch compared to the final cut pro (pre x) and more towards everyone.
  • ADOBE PREMIEREAdobe premiere and adobe premiere pro are really good editing soft wares for both mac osxand windows. It is the equivalent of final cut pro