It's ultimately happening. In the Usa, more High Definition televisions are being sold than original 4:3 suitable Definition Tvs. After years of promises, 16:9 wide screens are on their way to becoming the new standard. But what about our home movies? Should we be rushing out and buying High Definition camcorders? Maybe... But maybe not. There are standards wars going on. There is also a higher price extracted from early adopters of still-new technology. You need some technical background to help make an informed decision.
All video is Not created equal.
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Twenty-first century technology advances have brought us to a place where we can capture appealing pictures (often with sound) on a wide range of miniaturized handheld doo-dads from cell phones to Personal Data Assistant/Email devices to reasonable digital still cameras. No longer are our home movies something we show only to relatives. New internet video publishing/sharing sites like YouTube and Google Video are popping up every day, providing nearly limitless opportunities for our videos to be seen. Suddenly nearly anyone who can afford a cell phone can be a video movie producer.
Video is even replacing original film in cinematic movies as photograph ability has improved, thanks largely to new computer technology. Any way there is a world of difference between the clarity and information of cinematic video and the small, shadowy movies you can take on your cell phone. There are many contributing factors, but if we integrate on the camera, they are:
Lens Quality Resolution Frame Rate Digital Processing Compression
Lens Quality:
Photographs are made of light. The first and most prominent part of every camera is always the lens. Light passes through the lens, which can be a easy piece of curved clear plastic on the lid of your cell phone or a involved array of excellent visual glass elements on a Hollywood movie camera. The better the lens, the better the image. But even the most costly and thought about crafted lens changes the light passing through it in some small way, whether by absorption, reflection, refraction, or distortion. The finest, most costly camera is slight first and prominent by the ability of its lens.
Resolution:
It is becoming coarse knowledge that digital images are made of of small pixels or photograph elements. A pixel is not necessarily a circular dot; it can be a tiny quadrilateral or rectangle. The resolution of a digital image is the number of pixels, which defines the density and information level of the picture. The resolution of a digital camera is ordinarily thought about by the pixel density of the light sensitive gismo that captures the light from the lens. Resolution is connected to the size of the image when shown on a screen or rendered on a printer. In general it can be said that when it comes to video, the higher the resolution, the better the quality. suitable Definition Ntsc video is 720 x 480 pixels. High Definition Ntsc video has any possible resolutions, with the top being 1920 x 1080. Cell phones and reasonable still cameras may capture video in 320 x 200 low resolution, which is suitable generally for playback in small boxes on computer screens. Low resolution video does not have adequate information to be blown up to fill a Tv screen or computer monitor without becoming blocky and indistinct.
Frame Rate:
Movies are still pictures (called frames) shown one after other fast adequate to fool your brain into looking motion. How fast the pictures change is called the frame rate. suitable video changes at about 30 frames per second. Cinematic movies use a suitable of 24 frames per second. Any slower than that and the motion starts to appear jerky. Cell phones and small still cameras may capture video as slow as 10 frames per second; fast adequate to give an illusion of movement, but not smoothly.
Digital Processing:
Every digital camera has a processor that interprets the image according to rules set up by the manufacturer. Some settings are automated and others you may be able to control from menus. The art of interpreting color video is called "colorimetry" and every maker does it a slight differently. Be aware that you should read reviews thought about and if possible look at pictures side-by-side from distinct camcorders before you rule on an costly model. The differences can be subtle, but they are real.
Compression:
The best possible digital pictures come from "raw" images, which have slight or no digital processing and are stored in their most detailed form. Raw images consume an highly large number of storehouse space and they take time to transfer and to render on a screen. At this time it is not practical to store and display digital video in raw form using a camcorder that is affordable for home use.
Compression techniques such as Jpeg (Jpg) and Mpeg (Mpg) are used to sell out the storehouse size of digital pictures. Compressed pictures lose some details, but if done properly the images can still be remarkable even though they take up a tiny fraction of the storehouse space of their raw versions. At this time, all home camcorder video is automatically compressed during the digital processing stage.
The Move to Hd
There are two technologies contentious for the dollars of home High Definition video buyers. Hdv and Avchd. whether can be a good investment, but your choice between them is one that deserves some explore and study. Hdv stores video on suitable mini-Dv magnetic tapes. Avchd may use tapes, Dvds, or even store your movies on small hard drives. Avchd is a newer suitable that supports higher resolution "true" Hd, but if you are curious in doing computer video editing, there are fewer tools available for Avchd than there are for the more mature and established Hdv standard.
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