The working principle of video camera

The working principle of video camera

1. Working Principle of CameraVideo
  1. Software, Hardware and Term in Video Camera 1. Ratio The ratio is the dimension of the photo or video dimension, the most common size if you want to or want to be displayed on a non-widescreen television, for example a tube television is 4: 3 2. AF-lock AF is an abbreviation of Auto Focus. AF-Lock is used to lock Auto Focus function. Way by pressing half shutter button until focus of image locked. This function is very useful, if you want to focus the object you want to put on the side. The way f first object is currently in the middle, then slide the camera while pressing half the shutter button. Can be used to take pictures and video recordings.
  2. Aperture Aperture is the amount of camera lens openings to determine how much light can enter and about the image sensor in the camera. In the pocket camera usually the aperture is set automatically by the camera system. Medium more sophisticated camera, can be set to manual or automatic. So it is useful here to determine the darkness, the light or the appearance of an object to be photographed or recorded. 4. Aspect Ratio. The most common are 4: 3 and 16: 9 (widescreen).
  3. Autofocus (AF) Autofocus or often abbreviated AF is a means of digital cameras to automatically make the desired image sharper or clearer. For beginner digital camera, this function will automatically activate. For a digital camera, you can set it manually. 6. Automatic exposure (AE) Automatic exposure (AE) is the ability of a digital camera to adjust lens openings (see aperture) or shutter speed based on ambient light conditions. Digital cameras for beginners such as pocket cameras have 3 or more different AE modes.
  4. Burst Mode Burst mode is a digital camera feature to take multiple pictures at once in a short time. Suppose you want to take at once 10 photos in 3 seconds.Burst ordinary mode is useful when you want to take pictures of moving objects quickly. Another term is continuous shooting mode. 8. CCD CCD (Charge Coupled Device), is a chip inside the camera that serves as the image sensor. The CCD consists of. Its function is when the light into the camera through the lens, then the light will reach the CCD. The more popular technology today is CMOS.
  5. CMOS CMOS CMOS (complementary metal-oxide semiconductor) is an image sensor in a digital camera consisting of an integrated circuit to record an image. CMOS consists of millions of pixel sensors that include a photodetector. When the light enters the camera, each photodetector activates the electric current based on the light on it. The digital camera will convert the data from CMOS to pixel which eventually becomes a photo. CMOS to be a substitute for CCD because faster and more efficient use of batteries. Compact Flash (CF) CompactFlash (CF) is one type of memory card used in digital cameras. The function of the memory card is to store data photos and videos that you have created.
    1. Continuous continuous shot mode shot shot mode is also known as burst mode, which is the ability of digital camera to take the number of images in a short time. For example to take pictures of moving objects, you can take 10 photos within 3 seconds with this mode. 12. Depth of Field (DOF) Depth of Field (DOF) depth determines objects far in front of and behind the objects in focus can be seen clearly. All objects that are farther or closer to the object in focus, will appear blurry. 13. Digicam Digicam is an abbreviation of digital camera or digital camera.
    1. Digital Zoom Digital zoom is a digital camera feature to zoom (zoom) an image using software that is on a digital camera. The way it works is by increasing the pixel size. The disadvantage is the picture is not sharp when done digital zoom. Digital zoom will degrade image quality. Much better to use a public optical zoom using digital zoom. The easiest and cheapest method is implemented in a digital camera. EXIF Data EXIF is information about the resulting image, such as date, time, camera type, and camera settings. EXIF data will be added in the photo file.
    1. DSLR SLR or single-lens reflex is a camera commonly used by professional photographers. The digital version of the SLR camera is referred to as a DSLR. DSLR is the most advanced camera type used for experienced photographers. Love, in DSLR, you can match. Many cameras and features you can do with a DSLR camera. 16. File format The file format determines the file type generated by the digital camera. Files with JPEG format. Some digital cameras can also produce RAW and TIFF file formats. Flash Flash is an artificial light to enhance the light when shooting. We often know the term “flash lamp” or “flash”.
  6. Flash memory Flash memory is a data storage medium used in digital cameras. Flash memory cards can maintain stored data without requiring continuous power. There are various types and brands of flash memory. You need to store more images and flash memory speed in your camera. The other term is memory card. 19. Focal length Focal length is the distance from the center of the lens to the focal point (front lens). Measurement focal length measurement based on millimeters, and common with 35mm film. If you want to take a photo with a longer distance, then with a larger camera larger (millimeter bigger numbers). For example for telephoto, common photographers use cameras with focal lengths above 70mm. Frames per second (fps) Frames per second (fps) are usually associated with video. The fps number indicates the number of images that will take place in 1 second. For example 30fps, then the image will be done as many as 30 pieces of images within 1 second. The love of fps that is still comfortable to watch is 24fps-30fps.
    1. HDMI HDMI (High Definition Multimedia Interface) is an interface for sending digital images between devices. HDMI HDMI is used on an HDTV or computer. The HDMI connector lets you display videos to other devices such as a computer or HDTV. 22. High definition video (HD Video) High definition video, or HD video abbreviation, is a high resolution video, 1024×768 pixels. 23. LCD LCD (Liquid Crystal Display) is a feature in almost all digital cameras. Excess on the back of the camera. Its function is to display the image to be photographed, to view the photos that have been made, or to display the menu for configuring the digital camera.
    1. Macro Mode Macro mode is a mode on a digital camera to take photos with a very close (close up). In macro mode, the camera will reset the camera’s lens and flash to create sharp images at close range. Megapixel Megapixel (MP) is equal to 1 million pixels. Pixels are elements of an image in a digital camera. The numbers on megapixels determine the resolution of the image. An image with a larger megapixel, will have a higher resolution. Example: image resolution 1,000×1,000 = 1,000,000 = 1Mp
    1. Memory Card Memory card is a data storage media. For digital camera search results. There are various sizes, types and brands of memory cards. It used to be. To buy data storage capacity in your digital camera. Another term for the memory card is: flash memory. 27. MMC Card MMC (Multi Media Card) is one type of flash memory used to store data in digital cameras. The more popular technology created based on MMC is SD Card. 28. Movie mode Film mode is a means of digital cameras to record video clips. Almost all digital cameras have this capability. Some videos can be on HD video.
    1. Optical zoom Optical zoom is a digital camera feature to zoom (zoom) an image using the focal length changes in the lens. So you have to set the camera lens to enlarge the image. Optical zoom is a great way to enlarge an image because it does not change image quality like a method. The camera with a large optical zoom, usually more expensive than digital zoom. For example a camera with 10x optical zoom will be more expensive than a camera with 2x optical zoom. 30. Panorama Mode Panorama Mode is a feature where photographers can unite or map a picture into a viewable viewable image extending to 180 degrees or even 360 degrees.
    1. Pixel Pixel is an element in the image produced by a digital camera. A pixel is actually a very small dot or box colored. Millions of pixels in the form of a finished image into a beautiful photo or video. 32. Redeye reduction Redeye reduction is the ability of the camera to remove the red color that can appear in the pupils due to reflection of the flash in the eyes of people who are in the photo. 33. SD Card SD Card is one type of flash memory used to store data in digital cameras.
  7. 34 Resolution The resolution shows the number of pixels in a digital camera. The larger the number of pixels, the sharper the resulting image. However the number of pixels depends on the size of the memory card to store the data. Because of the larger pixel size, more and more data storage space is required. Ordinary resolution or resolution with numbers that follow the word megapixel or MP. For example 10 megapixels or 10 MP. If you managed to print a photo with a postcard, then a camera with a 2 MP resolution size is enough. But if you want to print with a large size, you choose a camera that has a larger MP. Secure Digital High Capacity (SDHC) Secure Digital High Capacity (SDHC) is one type of flash memory used to store data from digital cameras. SDHC technology is the development of SD Card with large storage capacity.
    1. Self timer Self timer is a digital camera feature to take photos automatically after a few seconds. The photographer directs the camera, that’s the time, say 10 seconds, and then after the button, the photographer walks into the area to be picked up. After 10 seconds, the camera will automatically take photos. 37. Viewfinder Viewfinder is used to view the photos you want to capture. There are 2 types namely: Optical viewfinder, which is usually located on the top of the back of the camera, a small window window. Digital viewfinder, there is usually an LCD that is behind the camera. 38. Wide Angle Wide angle shows the ability of digital cameras to take photos with a field of view more widely than human vision.
  8. Video Camera Working Principles Why do I discuss about software, hardware that supports video camera? Because in the process of taking video should not happen without the software and hardware. And why is it a video? Because the video is not biased from the photos I’ve discussed above it’s video bias is defined as moving pictures or images that have a motion effect. Why is that because the video itself is actually a drawing that many are arranged and have its own density standard so as to saturate its effect / which path is beautiful and called video. . Within 1 second there are 24 images. Something video wants to be better and denser then just increase the size of fps> 24fps.
  9. Since I discussed the working principle of a video camera then we should know what a video camera is. Video camera (Video Camera Recorder) is an electronic camera for motion pictures (Motion) in video format. The video camera itself in its development starts from an analog video camera and evolves into a digital video camera. In the modern era, the workings of analog video cameras have been abandoned. Because the video camera features and quality produced digital video camera is better and more manageable.
  10. The working principle of video camera can follow the following:
    1. Lens drawing, then forwarded to the image capture panel. The image capture or so-called CCD sensor – which also functions as a view finder – takes the picture to the LCD. While on a DSLR camera, the image is also passed to a reflection mirror that reflects the image to the eye viewer window. 2. Images captured by the lens, passed on a color filter which will be captured by the CCD or image sensor. The distance between the lens and the sensor is known as the focal length. This distance will also be a multiplier factor on the lens. 3. The CCD task is to change the analog signal (the image captured by the lens) into an electrical signal. In this CCD there is an excess of sensor points known as pixels 4. Images captured by CCD sensors are forwarded to the image processing section where all data from the CCD sensor becomes digital data with the image format, as well as the format process according to the selected image format (RAW, JPEG, and so on). In this section in addition to the role chipsets, the software (firmware) of the camera in question also determines the final image.
  11. 5.The last process is the resulting image file in the selected format to the storage or storage card. 6. The next step is the process done outside the camera.


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