Activity: digital camera (chosen by the equipment) 05/17/2010
Students:
-Salome Garcia-Gil http://salomeyah.blogspot.com
-Chidiak Gherman http://ghermangil.blogspot.com Karina htttp: / / karinachidiak14.blogspot.com Pietrantoni
-Gabriel-Robinson Nicholas http://gap99.blogspot.com
http://robinonicola.blogspot.com
-Red Javier http://jro2010.blogspot.com
The digital age has revolutionized photography . It is a thing of the past, the use of similar equipment. The capture process is electronic and digital. Unlike the use of the negative, in which photography is captured on film, digital photography, light passes between the lens and the CMOS (digital) through electronic pulses that form the image.
With the advent of digital cameras have been replacing the chip frame by a charge of capturing the images called CCD.
These digital cameras to photograph an image is reduced to bits to be stored and transported to a computer. Red light cameras have great advantages such as a look at the pictures taken without having to print and disclose. In a traditional camera, the light passing through the lens of an image recorded on film composed of several layers of chemicals (three layers sensitive to red, green and blue respectively, and color negative film, a protective layer orange). In a digital camera, the light hits an electronic sensor. The phenomenon is no longer produced chemical, but mail.
The image taken with a digital camera consists of millions of pixels arranged in rows and columns. The widely accepted file format for storing these images is the JPEG. . There are a variety of programs for editing digital images such as Gimp, Capture, the various programs of the Canon, Nikon, and program excellence by professional and amateur photographers for digital image manipulation: Adobe Photoshop graphics software to view these images.
Digital Cameras kind of understanding: All digital cameras "popular" use a lossy compression that degrades the image. Although lossy compression does not uncompress images to the same quality as the image source (original) it still looks visually lossless and appears normal if it gets too large. The method is to remove the data that are not obvious to the observer. For example, if large areas of the image are the same color, only one pixel value for that key is stored with the locations of other identical pixels.
Controls Digital cameras are basically very similar to the cameras 35mm film. Both contain a lens (lens), a diaphragm (aperture), and a shutter (trigger).
-The lens brings the light of the scene to the focal length of the camera so you can expose the image. The opening is a hole that can be made smaller or larger to control the amount of light entering the camera.
-The shutter is a device that can be opened or closed at different speeds to control the time that light enters the camera.
All digital cameras provide a fully automatic option, which is only necessary to compose and shoot. These automated systems are useful in the vast majority of situations and even professionals use them often. For other options must avoid the automatic settings and enter the manual control.
-LCD Viewer: The frame to be photographed on a digital camera is an LCD (Liquid Crystal Display) that are in the back and looks through the viewfinder classic cameras. Is a technology that can illuminate each point of the screen as the current is received. By this we make the frame to take the picture.
Storage Devices Digital Cameras
• Internal memory. The images are stored in an internal memory to be emptied on the computer when full.
• Removable memory cards:
These include:
-Compact Flash Type I Compact Flash
-type II, SmartMedia
-MultiMedia Card and Secure Digita
-Memory Stick.
-Magneto-optical discs
Current technology allows the inclusion of digital cameras in various everyday devices such as cell phones. Other small electronic devices (especially those used for communication) such as PDAs, laptops and Blackberries often contain integrated digital cameras. Also, some digital camcorders incorporate a digital camera. Because to limited storage capacity and the emphasis on the usefulness of these integrated devices as the vast majority use the JPEG format to store images for their great ability to compensate for the small compression quality loss it causes.
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