How to choose a digital camera

First, to buy a digital camera, we ask most about the hardware configuration of the camera itself, which can be divided into two parts: the lens and the body.

1, the lens is the eye of a digital camera. If you don't want to buy a professional SLR digital camera, but consider a consumer-grade digital camera, then consider that the lens can't be replaced. Generally can be divided into optical zoom lens and fixed focus lens. For consumer digital cameras, the imaging quality of optical zoom lens is much better than that of fixed-focus lens, while SLR lens is the opposite, because the workmanship and materials of fixed-focus lens are generally inferior in consumer digital cameras. Then the lens factor usually only needs to consider the zoom ability. Speaking of zoom, you may notice that digital cameras usually have optical zoom and digital zoom. What we are talking about here is optical zoom without losing image clarity. At present, the general digital cameras on the market have 4- 10 times optical zoom capability, and the products with pure fixed focus are rare. However, the stronger the zoom ability, the larger the size of the lens, so if you care more about the size of the camera, you can consider an optical zoom lens of about 3-4 times. Digital zoom is also the zoom of camera internal software. The image will become blurred and useless after use, so when buying a digital camera, it is necessary to distinguish whether the camera zoom is optical zoom or digital zoom.

2. The first thing to consider in the fuselage part is the heart of the camera-the photoreceptor. At present, there are two kinds of photosensitive equipment: one is widely used CCD (Charge Coupled Device); The other is a new CMOS (complementary metal oxide semiconductor) device. At the same resolution, CMOS is cheaper than CCD, but the image quality produced by CMOS photosensitive devices is lower. Therefore, in more advanced digital cameras, ccd is widely used as its photosensitive equipment. That's what we mentioned at the beginning: 250,000,654.38+03,000,8 million, that's what it means. The higher the pixel, the stronger the resolution of the image per unit area of the camera, and the photos taken are not only clear, but also can be developed into larger frames. At present, the pixels of general household models are between 4 million and 6 million, of which 5 million is the most common, while 8 million pixel models are not the majority at present, and some of them belong to flagship machine. But when we buy DC, we often mark the total pixel and effective pixel of this product in the description, and the latter is an important indicator to determine the actual image resolution. then

Generally speaking, there is little difference between the total pixels and the effective pixels, but some cameras with hardware interpolation function can output ultra-high pixels on the basis of the original low pixels. For example, a digital camera with only 3 million pixels can get 6 million pixels by interpolation. Although the number of pixels has gone up, the actual shooting quality can't be compared with that of a real 6-megapixel digital camera. It's just like a low-definition picture has been improved by PHOTOSHOP, but it's still with a really high-quality photo.

If the friends who buy the machine for the first time lack understanding of this phenomenon in the field of digital cameras, some illegal "JS" will take this opportunity to make a fortune. The 3-megapixel digital camera is sold as a 6-megapixel machine, but consumers don't know it, thus casting a "unjust case".

At present, the pixel level is still one of the important factors that determine the DC sales price. Consumers should choose their own models according to their actual needs, do not blindly compare, and strive to buy the best products with the least money.

Secondly, when it comes to the hardware configuration of the camera, it depends on its software: in order to take excellent photos, in addition to the sense of things and the inspiration of catching up, we should make full use of its functions. Consumer DC is mainly divided into manual DC and automatic DC in function.

1, manual DC: Friends who are interested in photography or want to learn photography can choose DC with manual function, because the manual function of the machine is very demanding. Therefore, it is more suitable for these friends to choose Canon G series, Sony F series, Nikon 8400, 8700, Fuji S series and Minolta A series. As for those friends who support domestic machines, they will be moved and feel sorry, because this aspect is still blank. In addition, users who need telephoto can choose Panasonic fz series, Minolta Z series, Olympus C7XX series and other models whose zoom is more than 10, users who need high-quality video can choose some camera models of Sanyo, and users who need wide angle can choose Ricoh G series or Sony f828, Minolta a 1, Canon pro 1 and other 28 mm wide angles.

2. Automatic DC: Suitable for those friends who simply record their lives and have low requirements for imaging quality. If you choose automatic DC, the first thing to look at is its ease of use. Automatic DC inherits the excellent usability of the fool film camera, and even children can take good photos with it. In order to make the photographer feel like a fool on the digital camera, DC manufacturers have made special "optimization" in key design, menu system, exposure mode and white balance adjustment: the control design is intuitive and convenient, and the key layout is more reasonable; The menu system is simple and clear, with few options and distinct levels; Although both exposure mode and white balance adjustment have manual options, they are mainly controlled automatically, so consumers can use it to shoot satisfactory digital images without too many settings. That depends on its cost performance.

Price and shooting performance are two aspects to measure the cost performance of a DC. Compared with those models that emphasize manual control, the sales price of automatic digital cameras often occupies a greater advantage, but there is no essential difference in shooting quality, which determines that such models have higher cost performance. The second is to meet the needs of shooting quality. Now, home DC has become the first choice of 5 million and 6 million consumers. Compared with manual digital cameras, automatic transmission models have the inherent advantages of being smaller and easier to carry, coupled with lower price, no inferior shooting quality and simple and convenient control design, ordinary consumers should naturally regard them as their partners in the journey. You can find more suitable cameras from Canon V series, Sony P series, Olympus U series, Nikon 2 series, Fuji a203, f40 1 and other machines. If the budget is still limited, you can consider some domestic cameras. If you want to enjoy photography occasionally, such as playing long-exposure night scenes and playing sports with high shutter. For such friends, it is more appropriate to choose Canon S series, Nikon 3700, Olympus 7 series, Sony w 1, v 1, Minolta F series, Z series and Kodak dx series.

Third, now I want to talk about the attachment.

1, say the battery first! Personally, if you don't have enough money, you must carefully consider this issue when choosing DC. Because the LCD screen, photosensitive equipment and lens zoom action will consume a lot of electricity during use, the battery capacity and the choice of compatible batteries should be considered when purchasing DC to avoid being depressed because of "insufficient electricity". At present, DC power supply is generally divided into two types, one is to use ordinary No.5 battery, and the other is to use special lithium-ion rechargeable battery. Speaking of which, everyone knows why we should consider this issue when buying DC! Yes, that's the difference between the 5th battery and the dedicated lithium-ion rechargeable battery!

2. Memory card: Because the standards of various storage media are not uniform, people will feel at a loss when purchasing the required storage media, so be sure to know what they need and what kind of card is suitable for them.