How many pixels is suitable for home digital camera?

Not less than 5 million is fine. First, pixels

Pixel number and size of image sensor CCD At present, most image sensors used in digital cameras on the market are mature CCD. In general, the larger the CCD size of a digital camera, the better, but the CCD of the same order of magnitude is also graded. Difference, the common CCD has five grades: 2/3 inch,11.8 inch, 1/2 inch, 1/2.5 inch, 1/2.7 inch. The higher the value, the higher the grade. 1/65433. A digital camera is not only distinguished by pixel level, but also by high pixel digital cameras. If you only need to put photos online or develop photos within 5 or 6 inches, a 2-megapixel digital camera can fully meet the requirements. For printing in A4 format, a 3 megapixel digital camera is enough to complete the task. Then only from the practicality and price of ordinary home users, 20-40 thousand pixel digital cameras are the mainstream home digital cameras now. However, with the improvement of digital camera pixels, 5-6 million pixels have become the mainstream of home digital cameras, meeting more needs of home users.

Second, the lens and zoom

As we all know, the zoom modes of digital cameras are divided into digital zoom and optical zoom. In fact, digital zoom is the electronic amplification technology of pictures. Some pixels on the original CCD or CMOS image sensor are amplified by software interpolation, so the digital zoom we usually see supports 1-3 times. Although the shot image is enlarged, the definition will be reduced to some extent, so the practical significance of digital zoom is not great. Optical zoom relies on the change of optical lens structure to achieve zoom, that is, by moving the lens to enlarge and narrow the scene to be shot. Nowadays, most mainstream digital cameras in China have an optical zoom of 3- 10 times, and digital cameras with an optical zoom of more than 10 times will also enter the homes of ordinary people.

For the current market situation, digital cameras with the price of 1000-3000 yuan can be positioned as home digital cameras, and large zoom home models have become more and more popular among home users. With the popularity of digital cameras, people want to play more tricks, and shooting special scenes is no longer the patent of professionals. Like to shoot distant animals or want to sneak shots of beautiful women with your card machine without attracting attention; Of course, use a model with a certain optical zoom. Whether you like micro-shooting or telephoto, choose a camera that can meet your shooting needs.

Third, wide angle and macro.

The wide-angle function can not be ignored in digital cameras. Want to shoot a wider big scene; Wide-angle function is essential. Speaking of wide angle, Ricoh is the king among many brands. 28mm wide angle, has entered thousands of households. For the micro-shooting function of the current wind, we also need to pay attention to it; I like to carefully record all my works with my camera; Or people who like to have sex; The function of microphotography is of course indispensable. The most important factor affecting photomicrography is whether the camera has macro function. When it comes to macro, we have to mention the brand Ricoh. Its home R series has an amazing macro of 1cm. Let you shoot if you want; There is no doubt that you can take good photos.

Fourth, color reproduction ability.

The color reproduction ability of digital cameras is related to the following aspects. For example, the quality of CCD itself, whether the metering method is scientific and accurate, whether the adjustment of white balance is based on a complete scene, whether the white balance is predicted, etc. All these will have a great influence on the final color reproduction of digital cameras.

White balance, exposure, ISO sensitivity and other indicators are also the focus of selecting and using digital cameras. Because their importance is relatively low, you can choose according to your own needs when buying.

Verb (abbreviation for verb) shutter speed

The main application scope of shutter is shooting moving objects and occasions, but it takes a long time to accumulate experience to shoot properly, which is more suitable for snapshots. Here I give an example. When shooting walking or fast moving, the shutter speed should be set at about 1/250 seconds, so as to get a relatively clear and jitter-free picture. To shoot a faster free fall or flying object, it is necessary to increase the shutter speed to about 1/400 seconds; It takes more than 1/800 seconds to shoot maximum ride. On the contrary, if you want to take a relatively blurred photo with another artistic conception, you will get better results by lowering the shutter relatively, such as 1 sec,1/sec, etc. ......

Intransitive verb others

Most users like large LCD, DC powerful short films, the use of lithium batteries in cameras, etc., and with the upgrading of digital cameras, large LCD is no longer high. Generally around 2.5 inches, the pursuit of LCD pixel value has become the main development trend. For today's digital cameras, the original AA battery is generally replaced by a lithium battery, which is more convenient to use. This needs to test the endurance. Lithium batteries can only be fully charged, and short battery life will affect shooting during travel.

From the above introduction, it is more important to choose a digital camera suitable for home use from the perspective of practical application, and to better define the direction of use and performance positioning, which is the decisive factor in choosing a suitable camera. Of course, it would be great if the above-mentioned main factors for choosing a camera are all available, but there are few cameras on the market that can completely meet the above good factors. The R30 in Ricoh R series recently discovered by the author is closely consistent with the above elements: 5 million pixels are suitable for home use, 28mm wide angle, 5.7 times large zoom, 1cm macro, 2.5-inch LCD, accurate color reproduction and so on. And the price of this machine is not high, about 1950 yuan. Interested friends can go to the market to see.