What's the difference between a digital camera and a digital camera? Can the camera take pictures? Can the camera record high?

A product similar to net X-ray in China is said to be the only digital camera in China that uses high-quality CCD imaging chip (non-CMOS imaging chip). Why is this publicity? It is because in the past, cameras such as net X-rays were generally CMOS lenses, and there was no way to compare them with CCD used by digital cameras in large factories!

And this kind of products have no optical zoom at all. Generally, digital cameras have 3 times optical zoom, while real digital cameras have at least 10 times optical zoom, and there are not a few with 20 times optical zoom. Now there are about 3,000 yuan of products (of course, the post-processing is more complicated, and the speed of converting from DV tape to MPEG depends on how your computer is configured). Digital zoom is meaningless to the clarity of the picture!

At present, the development of CMOS technology is far less clear than CCD, and some CMOS pixels on the market are only simple interpolation, which can not provide good image quality at all!

Some advertisements say:

Image sensor: 5 megapixel sensor COMS, maximum output120,000 pixels (it should be interpolation! )

How many tens of thousands of pixels do the 2.5-inch viewfinder screens of these products have? It's best to ask clearly that the worst 2.5-inch screen in general DC has hundreds of thousands of pixels, and some Samsung models have 230 thousand pixels!

Some dealers advertise that MPEG-4 short films and special videos can record MPEG-4 movies for up to 3 hours with 1G SD card. This is the format for recording 320*240 15 frames per second. What's the point? Ordinary digital cameras can do it! If you must record 640*480 MPEG4-4, you can consider Samsung's new series, BenQ's new series and Kodak 530. The photography effect is very good! But 640*480 30 frames generally record about 5 12 trillion 27 minutes! Some digital cameras also have anti-shake function! ! !

Personally recommend Samsung U-CA5.

Have a strong photo function, the price is below 2000!

/kloc-send 256 cards around 0/500:

You can buy Samsung A50 L50 with more money.

2.5-inch big screen has face! 5 million pixels

Both of the above models have camera anti-shake function! But it should be noted that the zoom will be muted when shooting! Be sure to read it on the computer when you buy it, and then buy it when you feel satisfied!

Buy digital cameras and try to buy famous brands! Check the price online in advance! Look at the digital product network:

Network X-ray digital machines also have advantages:

Digital zoom works well when shooting. Many digital cameras can't use digital zoom for shooting, or there is no sound when using Samsung optical zoom!

After using digital zoom, it takes up less storage space!

Multifunctional and simple, suitable for ordinary consumers to master and learn!

Suitable as a gift, let people know the price at a glance!

It is more convenient to carry than DV.

The shockproof performance is similar to that of a digital camera, and better than DV!

Digital cameras have many camera functions, but Samsung, Kodak, BenQ and other brands are recommended. The recording format is MPEG4-4, not ordinary AVI, which takes up less storage space and can be read by a more advanced DVD player!

The above is purely my opinion, and I have no intention of slandering any brand. I only compare the parameters published online! ! !

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Of course, you can buy a digital video camera:

DV tapes are generally cheaper, about 3000 yuan, but post-processing is time-consuming, but using other media is more expensive.

The main storage medium of digital camera is memory card, and the mainstream storage medium of digital photography is still magnetic tape.

Others include memory cards, DVDs and micro hard disks.

Although the storage of video images by magnetic tape solves the capacity problem, magnetic tape has its inherent shortcomings. First, tapes are not resistant to long-term storage. Secondly, although the magnetic tape can be reused, with the increase of the number of uses, it will inevitably have the shortcomings of quality degradation and damage by external forces.

The biggest problem is that post-processing is time-consuming!

First of all, MPG is lossy compression, no matter what format it is compressed into, it will lose image quality. Secondly, the three compression ratios of 6.0, 7.0 and 8.0 are relatively large, and MPEG compressed into PAL DVD will feel bad. You are in compressed VCD format, so it is normal that the image and sound effects are poor. It is suggested that 1394 is the best acquisition method, and professional acquisition software will have better effect. General home use 1394 card, about 60-70 yuan, the general market to choose Du Pai is not a big problem.

Secondly, for the computer processing video, the quality of the configuration directly affects the video effect. The requirements for computer collection are not very high. Some friends have poor collection results, generally because the motherboard chipset is VIA or SIS. The motherboard disk performance of these chips is not as good as INTEL's, and the motherboard driver needs to be installed to open DMA. If the DMA does not open the disk, the performance will be poor. Generally, the hard disk does not need to be set, but sometimes the DMA of the hard disk is not turned on, so it is necessary to download a setting program from the website of the hard disk manufacturer to adjust it. The graphics card is also the protagonist, so it is recommended to use ATi products.

Furthermore, you must know something about the interface, software and video format!

About interface: There are generally two interfaces for connecting a computer to a DV, one is a serial port or a USB port, and the other is a 1394 port that we often use to collect DV videos. The full name is IEEE 1394, also known as firewire. Sony's name is I. LINK, which is 4-pin small mouth on DV machine and 6-pin big mouth on general computer.

About software: It is very important to choose a nonlinear editing software that really suits you. There are many softwares in the market, including Woori's audio and video, Adobe's PREMEIRE, Pinnacle Studio and Windows' Movie Maker. Generally speaking, Pinnacle Studio has the best collection function, beautiful interface and better image quality than other software. But Pinnacle Studio is a software of Pinnacle, and not all 1394 cards can be used. Generally, audio-visual or pre-burning can be used.

About video formats -AVI and MPEG:AVI format is not as complicated as MPEG format. Its direct advantages are good compatibility, convenient call and good picture quality, so it is often called DVD. But its disadvantage is also obvious: large volume. According to different application requirements, the resolution of AVI can be adjusted at will. The larger the window, the larger the data volume of the file. Reducing the resolution can greatly reduce its size, but the image quality is inevitably damaged.

With the development of DVD disc, flash memory and hard disk storage technology, DV products using non-tape storage media began to appear in the market.

DV specification should appear after the popularity of DVD video. Due to the maturity of DVD recording technology, it is possible to record digital video images in MPEG2-2 format with 8cm DVD disc as the carrier. The advantages of DVD disc are large capacity and good compatibility. After the shooting is completed, users can directly put the DVD disc on the home DVD player to play back the shot image, and its ease of use is obvious. Therefore, the DVD specification DV is basically aimed at home users, but it has not been adopted in professional or broadcast-level DV machines. At present, DVD DV mainly adopts DVD-R or DVD-RAM, and the picture quality can also reach the horizontal resolution of 500 lines of DVD movies sold in the market.

At present, high-capacity and high-speed flash memory has gradually entered digital cameras, and its benefits are obvious. Users can access files conveniently, and after shooting, they can copy the shot video files to the computer for playback and editing, without the complicated video capture operation like tape shooting. But generally speaking, the MPEG4-4 format can reach 720*480 (Samsung MS-2 100).

In fact, most MiniDV and even DVD-DV products on the market have designed digital memory card interfaces, which are mainly used to store still photos taken by DV, and a few models can also be used to record some short films recorded in compressed video format. However, it is difficult to further improve the capacity of flash memory, and high-quality videos often require large-capacity storage media. At present, DV using flash memory as storage medium mostly records the captured images in compressed digital video formats such as MPEG-2 or even MPEG-4, which is naturally inferior to MiniDV lossless video format in quality. The video standard of MPEG2-2 can completely meet the requirements of ordinary users, so DV products with flash memory as storage medium should be able to occupy a certain share in the market in the future. After all, its convenience and good image quality can still attract some users. Panasonic's upcoming SDR-S 100 is a new DV product that completely replaces the traditional storage mode with SD card. With the introduction of high-definition video specifications, there is a greater demand for the capacity of storage media, and hard disks that are good at capacity naturally become another popular storage method in DV. The progress of hard disk technology not only improves the speed of data access while maintaining large capacity, but also reduces the volume of hard disk. In the next few years, the high-capacity and high-speed micro hard disk will surely become the new favorite in the DV field, replacing the dominant position of MiniDV and becoming the standard equipment of the new generation of high-definition digital video format HD DV. Of course, the future development of DV is difficult to predict. Perhaps after the establishment of the new generation DVD format, DV with Blu-ray DVD specification will appear in the market soon.