英语作文 写digital camera或TV

英语作文 写digital camera或TV
写一篇关于digital camera或着TV的英语作文.
介绍用途,优点等.80字左右.

digital camera：
The digital picture from the camera is instantly available to transfer to a computer or a modem or even to transfer wirelessly. The picture can be instantly sent or viewed. The picture can be immediately edited, in some cases while still in the camera. The picture can be immediately deleted if it is not satisfactory. With multi gigibyte storage media, many hundreds or even thousands of pictures can be stored on media the size of a book of matches.
The digital camera is usually programmed so that very many options are available, just to name a few; noise reduction, anti shake programs, red eye reduction, face recognition, and in some cameras, smile recognition, which waits for a person to smile before the picture is taken! Most digital cameras offer a choice of taking color or black and white pictures.
Since the picture is visible on the liquid crystal screen, usually on the camera back, you can quickly learn what is good and bad about your photographic technique.
Using flash often yields unpredictable results, but the results can be quickly viewed and the picture taken again if necessary.
On the other hand, a 35 mm film camera is usually limited to 24 or 36 pictures on a roll of film, which must be chemically developed in a darkroom. The picture must then be printed or projected to be seen.
To take a thousand pictures with color film using 28 rolls of film at 4 dollars per roll of 36 pictures, costs 112 dollars. The cost of developing and printing 28 rolls of film at about 10 dollars each is 280 dollars.
To take 1000 pictures with the digital camera may cost 15 dollars in batteries, or less if rechargable batteries are used. It costs far less to take and print digital pictures after the initial outlay of the cost of the digital camera and printer is considered.
Many people consider digital photography a new and exciting art.
第二篇：
The power of digital technology has intervened in most works and imaging is one of them. The digital cameras have established a foothold in the market and are slowly but surely wiping away the film camera market. The digital camera has an edge over film cameras in many ways. The quality of the digital photographs differs from camera to camera and one can choose the digital camera that meets their requirement.
The cost and efforts are the major differences in the two forms of cameras. While film cameras cost less, the camera film cost is never ending. Once you have finished your roll of film you need to reload it with another one. The film then has to be developed through a lengthy process and then printed according to your size requirement. Developing the film isn’t an easy task and most of us would prefer doing it from a professional, which adds to the cost. On the other hand, digital cameras have the photos saved on the memory card in the camera. These can be easily transferred to your computer or laptop. They can then be easily printed at your home if you have a printer. The whole process of getting the image in your hand is much simpler and faster.
Digital cameras sport user-friendly features and offer array of options. The most useful function is the instant reviewing of your image. The LCD display at the back of the digital camera lets view your images taken and if you are not satisfied with an image you can reshoot it. You can get the right proportion of the image and not miss out on anything. The size of the LCD displays are increasing for better viewing and some cameras like the Sony digital cameras, Nikon digital cameras etc offer LCD display up to 2.5-inches.
Many digital cameras also offer video shooting ability. Most digital cameras will get you small video clips and higher cameras like the Canon digital cameras will get you extended video shooting. Digital cameras give you the liberty to shoot in several modes like black and white, sepia, tungsten etc, which will enable you to get varied effects in your picture. You can buy digital camera online from popular online shopping based websites. These sites have different brands featured and you can get the one that suits your needs and fits your budget. You can also avail great deals and offers on your digital camera purchase.
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Making the switch from 35mm to digital can be tough for a novice camera fanatic. The concept's mostly the same, but the way the picture gets stored, printed and viewed is different. But, the advantages to digital have made it the preferred way people take pictures. Everyone from professionals to stay-at-home moms are using digital now.
Finding the right digital camera is a question of knowing your needs and matching it to the camera in question. Digital cameras are pretty amazing little creations that can pack a whole lot of features into a single, small device. The reasons they've begun to replace 35mm are many and include:
* Ease of use. Digital cameras, even some of the best on the market, are designed to be very user friendly. Most are point and shoot, but there are many options for those who like to choose their own settings, change lenses and more. Plus there are even online processing services, so there's no need to head out to get prints. They can be mailed right to your door.
* No film. The LCD readouts on most digital cameras coupled with the elimination of film make these wonderful for shooters who want to see their pictures and choose them before they're printed.
* Economical. Since the photos on digital cameras can be carefully chosen in advance of printing, the costs can be much less. Plus, there's no film to buy.
* Quality. Depending on the camera purchased and the accuracy of the settings, the quality can rival and sometimes even surpass a regular 35mm camera.
The key to getting the best possible digital pictures is to make sure the right camera is bought. The resolution of the pictures taken will determine what they can be best used for. This in digital is measured in something called a megapixel.
A single megapixel camera, for example, will produce shots that are ideal for e-mail sharing and for 4x6 prints. On the other hand, a five-megapixel camera is fantastic for prints up to a full 11x14 inches. The reason for the difference is the quality of the digital file. A lesser file will become grainy when the image is blown up. The five-megapixel camera's shots, however, maintain their appearance.
Another consideration a buyer should make is the size of the storage device used for the camera. Rather than film, digital cameras use storage cards. These can hold a whole lot of pictures - not like a standard 35mm roll. A 256 MB card, for example, can hold about 415 lower quality shots. That's a whole lot of film!
Digital cameras do have some disadvantages, too. Some models tend to be a little slow to shoot and reset, and they can be difficult to figure out at first. But, once they're figured out, digital cameras tend to be more convenient, user friendly and ready for the action than typical 35mm.
Offering a new alternative in picture taking, digital cameras are great for novice shooters and even pros. The choices on the market are incredible and the applications many. The ability to see what's been taken before printing is fantastic and is a real boon for those who want to make sure they have "the shot" before they move on.
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