Pacific photography network forum

First, the basic essentials of choosing a digital camera-nine elements of machine selection and purchase.

Digital camera and traditional camera are quite similar in optical and mechanical structure, electronic exposure control and so on. The biggest difference between them lies in the difference of imaging medium and imaging principle. Digital camera is much more complicated than traditional camera in imaging and working principle. Because of this, there are various digital cameras with different functions on the market, which dazzles consumers and makes them wonder which one suits them and what they want.

In fact, as an ordinary consumer, you don't need to explore what the imaging principle of DC is. It is important to clarify two points first:

1. Choosing a digital camera itself is a trade-off process. There is no perfect digital camera, no matter how much you spend, you can't buy it.

2. What suits you is the best and the most cost-effective.

According to my personal experience, I sum up nine aspects that ordinary consumers need to pay attention to when buying DC as "nine elements of choosing a machine and buying a machine", some of which are light and some are heavy. For the convenience of expression, let's talk about it from important to secondary.

The "nine elements" are: use, price, lens, photosensitive element, shutter and aperture, pixel, economy, appearance and function, and brand.

1. Usage: According to the grade of imaging equipment, the strength of manual control function and whether the lens can be replaced, digital cameras can be divided into three types: household, quasi-professional and professional, but no matter which type of product, its basic working principle is not different. The key is to understand what they are used for.

2. Price: There are two questions to consider here: What is my monthly income? What is the disposable expenditure in hand at present? Generally, your monthly income is the lower limit, your disposable expenditure is the upper limit, and then take the middle number. For example, if your monthly income is 1000 yuan and your current disposable expenditure is 2,000 yuan, then it is suggested that the bare-metal price of your camera should be between1000-2,000 yuan. Choose the middle number of 1500 yuan as your frame of reference. Digital cameras need a lot of accessories, not a bare machine can be used happily, so the abacus must be carefully calculated, because buying a camera will make ends meet and affect the quality of life, which is too uneconomical.

3. Lens: The lens is the most critical factor to determine the imaging quality. We often encounter concepts such as telephoto, wide angle and macro, which are all part of the lens. Of course, the most important parameter is the quality of the lens itself. From the focal length, there are fixed-focus lenses and zoom lenses. Fixed-focus lenses can't zoom in or out of scenes or objects, but they are very cheap. Zoom lens has optical zoom ability, which can zoom in and out of the scene, which is very convenient and practical, but the price is relatively high. At present, household cameras with a price of more than 1000 yuan generally have three times the optical zoom capability and a macro of 5- 10cm, and some can reach 4-5 times. Wide angle below 28MM and macro ability below 3CM are generally the characteristics of high-end lenses, but it is gratifying that some low-end camera lenses have such functions at present. The most important thing in choosing a lens is quality. From the quality of the lens itself, Schneider, carl zeiss, Lycra and other lenses have always been synonymous with professional lenses, while Canon, Nikon, Fuji, Ricoh, Kodak and other brands with lens production capacity will have more professional lens quality.

4. photosensitive element: the photosensitive element of digital camera plays the role of replacing the film of traditional optical camera, and it is also the most critical factor to determine the imaging quality. Photosensitive elements are divided into CCD and CMOS. Due to the poor photosensitivity and imaging quality of CMOS components, only cameras below 1000 yuan and some low-end entry cameras are used at present. General brands of household cameras use CCD components. An important basis for evaluating CCD is its size. The larger the CCD size, the larger the photosensitive area and the better the imaging quality. At present, most professional cameras use CCD above11.8, while domestic cameras generally use 1/2.5 CCD, and some use 1/2.7 CCD. Theoretically, under the same CCD size, the lower the pixel, the better the imaging. This view has also been supported in the actual test. Therefore, the simple pixel height does not represent the quality of the picture.

5. Shutter and aperture: In the process of camera shooting, reasonable use of shutter and aperture can make you take more ideal photos. At present, the shutter and aperture parameters of domestic digital cameras are uneven, and with the single shooting mode of fully automatic cameras, many people have no illusions about the manual function of domestic cameras. Although we can't ask home DC to have the same manual function as a quasi-professional or professional camera, at least we can choose products with better indicators. As for the shutter, we try to choose1/2000s ~ 1 sec products. With various scene modes, we can not only take moving photos, but also take long-exposure night scenes. In terms of aperture, products with an index of F2.8~F5.6 should belong to the basic selection range. Large aperture combined with telephoto lens can obtain more ideal depth of field, and this combination can shoot more stereoscopic works of art.

6. Pixel: Some people think that the higher the pixel, the better, but it is not. If you want to use a photo with a 17-inch display as a desktop, a 2 megapixel photo can be very clear and beautiful. 3 million pixels is quite extravagant for developing a 6-inch photo. 4 million pixels can easily output A4-sized photos. Therefore, the concept of pixels is only the range that can be developed (enlarged) and the capacity that can be processed, which has little practical significance for the needs of ordinary families. Some digital camera manufacturers put extremely high pixels on very small CCD, which sounds like high pixels. In fact, the imaging quality is not as good as an ordinary camera with 2 million or even 6.5438+0 million pixels.

7. Economy: mainly refers to power consumption, memory card type, three-guarantee service, etc. Saving electricity means saving money. Memory card is a must. It is embarrassing to buy a machine without a card. Three guarantees after-sales service is a must. Digital products are prone to various problems. No after-sales service means that your money may be squandered at any time. At present, digital cameras on the market generally use lithium batteries and AA batteries, and some have both. I recommend you to buy a lithium battery. Of course, it is more convenient to have both. At present, lithium batteries of general digital cameras can take more than 200 photos, and Ricoh cameras can take 700-800 photos in case of abnormality. Memory cards are divided into XD cards, memory sticks, SD cards, MMC cards, CF cards and SM cards. Different types of cameras need different types of memory cards. For example, Sony cameras generally need a memory stick, Olympus generally needs an XD card, Canon generally needs a CF card, and most cameras are equipped with an SD card. Among them, XD card and memory stick are two expensive memory cards, and SD card is becoming the mainstream storage medium because of its high speed and low price. After-sales service is of course the safest licensed product in Chinese mainland.

8. Brand: The reason why the brand is placed in a relatively backward position is because the brand is not decisive for choosing a camera. Any brand may have its own top products, and it will also fail. Choosing a camera depends on what suits you best. As far as brands are concerned, the domestic market is dominated by China, Japan and South Korea. They are made in China (Lenovo, BenQ, Patty, Zhongheng, etc. ), Japanese (Canon, Nikon, Sony, Olympus, Ricoh, etc. ), American (Kodak), South Korea (Samsung). Sometimes according to brand awareness and market share, it is divided into first-line (Canon, Nikon, Sony), second-line (Olympus, Fuji, Panasonic, Casio, Ricoh, Kodak, Samsung, etc.) and third-line brands. Behind the brand is the true reflection of market share and word of mouth. Of course, the brand also means the price gap. I don't think it's the best policy to choose a camera just by looking at the brand. What suits you best is the best. Nowadays, the quality improvement of domestic brands is obvious to all and deserves your support.

9. Appearance and function: This is purely a personal preference. Some people like thick ones, others like thin ones. For the LCD screen, some people like the big screen, others don't care. In fact, I don't think the size of the LCD screen is very important. The effect seen on the screen is basically different from the actual shooting effect. Nikon cameras usually have a screen of 1.5, which can't hide their excellent performance. But some large-screen cameras look beautiful, but the imaging quality is not satisfactory. In terms of functions, it generally refers to whether there are manual control, the number of optional modes, dynamic picture format, time limit, recording, MP3 and other functions. Here, what should be taken seriously is whether to use the manual function. The operation of manual function requires certain skills and knowledge, and reasonable use will definitely make better films than cameras without manual function. However, today's home cameras provide a wealth of optional modes, and there is no need to force manual operation. If it is used well, the camera can still take beautiful photos ~ As for MP3 and dynamic images, it can only be said that there is specialization in the industry, and the more functions, the worse the camera's photographing ability will actually be.

Second, what kind of camera is suitable for you-quickly customize according to your own needs.

After mastering the nine elements of choosing a digital camera, you can customize a basic camera selection framework for yourself according to the nine elements, and then follow the map. For example:

Use: family entertainment

Price: about 2000 yuan

Lens: at least 3 times optical zoom, wide angle, macro, professional quality lens.

Photosensitive element: CCD

Shutter and aperture: 1/2000s ~ 1s, F2.8~F5.6

Pixel: 4 million

Economy: lithium battery, compatible with alkaline battery and rechargeable battery, can take more than 200 photos when fully charged; SD card (XD card and memory stick cost the most); Mainland licensed goods.

Appearance: small and stylish

LCD screen: 1.8 inch or more.

Function: Do not operate manually.

Brand: Japanese goods or foreign goods

The basic outline of your ideal camera will be clear. With this basic outline, all that remains is to find a qualified camera online, or you can directly ask experts for help. The digital area of Yi Bei community is a good place to seek expert help. I remember a customer posted a bid for a digital camera in the digital area, and the response was very quick. According to your own search and the recommendation of experts, gradually narrow the scope, and your favorite love machine will show a lovely face ~

However, there is a premise that the tone you set cannot be messed up. It's best to stick to the castle peak and not relax, otherwise it will still be chaotic ~

3. How to judge the seller's reputation-3. Look and ask.

Online shopping, the most important thing is to rest assured, don't be greedy for cheap. The old man has been saying: greedy for small and cheap, big losses, there will be no pie in the sky. In fact, this is the absolute truth. Don't blame JS too much. In fact, I said that JS was forced out by greedy customers. How can we have both cheap and high quality? Often some people are deceived because of greed and petty gain!

So, how to buy your own love machine cheaply and safely online? Muyu gives you three kinds of medicine as usual: three looks, two questions and one test.

1, three look

Look at the price: generally, a cost-effective camera will be sold by many people online, and the price will be different. Look at the actual price of a camera, not the lowest price, but the mainstream price. Many people like to go to the Pacific Ocean and Zhongguancun to see the market. In fact, those quotations are for reference only. As long as you want money, anyone can quote anywhere, and the website is not responsible for checking the authenticity of the quotation. Determining the actual price depends on the mainstream price. For example, on Yi Bei, if you search for a camera, many sellers' quotations come out. 80% of the sellers' quotations are around 2,000 yuan (the price difference is within 30 yuan), and few people's quotations are lower than 1800 or even lower. You should be careful. Because everyone's channels are similar, even the price difference caused by different purchases is generally around 50 yuan, not too much. Unique low price is often a trap. In fact, the cost of digital cameras is rigid, and when the price drops to a certain extent, it becomes rigid. At this time, if you still ask the dealer to reduce the price, you are deceiving yourself.

Second, look at bad reviews: look at the seller's reputation, not just the number of credit evaluations. The key links to evaluate a seller's reputation are: the authenticity of the evaluation, the content of the middle evaluation and the bad evaluation. Some sellers have a lot of credit scores, but there are two ways to judge emphatically: first, where does his credit score come from, is it true, how much the seller gives, and how much the buyer gives. Second, look at how his bad reviews come from, how many bad reviews there are, and the content of bad reviews.

Third, look at the introduction: read the owner's personal introduction and product introduction carefully. Personal introduction can let you know what kind of person the owner is, the nature of the store and whether it is credible. Product introduction can give you a more comprehensive understanding of the goods, and at the same time compare the introduction of the store with the relevant evaluation on the Internet to see if there is any exaggeration; See clearly whether it is licensed, parallel or second-hand, and whether there is a three-guarantee commitment.

2. The second question

Only by asking more questions, thinking more and seeing more will we not be blind and fooled.

Ask about the goods: Ask whether the goods are licensed, parallel or second-hand, what is the after-sales service, and whether there are reliable promises.

Second, ask accessories: Many JS will cheat on accessories. At this time, it is necessary to ask in detail how to judge the authenticity of accessories. If the store can explain clearly how to judge the authenticity, then the reliability of the store will be added.

3, a test

When you are sure that a seller's credit is true, the content of bad reviews is understandable or there are no bad reviews, don't make a hasty decision. At this time, you should get in touch with the seller through Want Want, QQ and other ways to test the seller's service attitude and temper. Generally speaking, a seller who can patiently answer questions before selling and is calm and honest can basically be determined as a reliable level.

Four: How to prevent yourself from falling into the trap-don't stop serial lore!

Some js often replace the original accessories (such as batteries) of digital cameras in order to cater to customers' greed for cheap, or take the opportunity to promote fake and inferior memory cards and batteries. At this time, we must be very careful, ask more questions, test more and verify more. Especially the original batteries and distributed memory cards, there are the most tricks inside. At this time, there are two tricks for serial lore, which can avoid being cheated to the maximum extent.

First, choose jewelry that can identify the authenticity. Ask the seller about the identification method of the original battery and buy a memory card with reliable identification method, so that the authenticity can be identified as soon as the goods are received. You can confirm whether the battery is original by calling the service number of the manufacturer. The problem of memory card is more serious. Although many famous brands have anti-counterfeiting labels and 800 telephone anti-counterfeiting or official website verification procedures, some have 800 telephone numbers, but they can't get through or are not opened at all, which means there is no identification means. Be sure to ask in detail before buying this, don't be afraid to be wordy. You know, a bad fake memory card is very harmful to the camera! And if the camera is damaged, you can't enjoy the three guarantees service.

Second, resolutely use Anfutong. In this way, you can always keep the initiative firmly in your own hands and say no to those sellers who don't agree to use Anfutong! There are three biggest benefits and ultimate guarantee for using Anfutong:

First, it is affordable, which can save the handling fee for bank transfer. This handling fee is 1%, which is not a small sum for a digital camera of several thousand yuan. Some friends may say that my bank card has no online payment function. Actually, this is very simple. Yi Bei provides a very simple function to enable online payment. You can click and follow the operation step by step, and it will be opened soon!

The second is safety. Anfutong is the touchstone for sellers and the safe for buyers. Buyers can always take the initiative in their own hands when using Anfutong, but those sellers who dare not let buyers use Anfutong are absolutely untrustworthy and cancel directly from their sight! Of course, I also despise those villains who use Anfutong to blackmail sellers. Although these people are few, they are hateful! I have been blackmailed, but I still insist on using Anfutong ~ because I believe that honest and kind people are still the vast majority!

The third is convenience. You don't have to run to the bank so tired ~ hehe ~

Finally, talk about the memory card capacity. The random memory of the digital camera itself is 8-32m, so you can't save several photos. Think about the number you can shoot at a time, and then choose a memory card that is large enough. Generally speaking, each 3-megapixel photo is about 500K, each 4-megapixel photo is about 1M, and each 5-megapixel photo is about 2 m. Based on this, you can determine how big a memory card you need.

Say something after reading it!

As long as there is life, there is hope. As long as there is breath, hope will not disappear.