Very practical! 10 tips for purchasing a digital camera

Recently, I strolled through the Internet to see what netizens are concerned about. I found that a netizen summed up several precautions for purchasing a digital camera using his personal experience. Although the content is just my personal opinion, however, we can still summarize a lot of things.

1. the CCD size is not necessarily large. Generally, the larger the size of CCD, the higher the width of the CCD, the better the dynamic range, and the less noise, the more favorable it is to take a night view, higher ISO sensitivity can be selected when capturing dynamic scenes. However, in my opinion, if it is used as a general Pat, the CCD size is smaller than that of the Canon a400, and its CCD size is 1/3. 2. During the day shooting, the effect is quite good. Even in the night view, the video can be shot with a lower resolution. Due to the merging of pixels, the effect will not be much worse. Even if the CCD has a large size, it still has a lot of noise. In my opinion, the size of the CCD does not affect the final imaging effect as people think. Therefore, the CCD size does not need to be considered during the purchase, even if it is 1/2. 5 or above.

You can select a digital camera to purchase more suitable ones
2. When the CCD size is the same, you should select a camera with a low pixel. The smaller the pixel size, the larger the photosensitive area of each pixel, and the better the performance. (Editor's note: choosing a digital camera doesn't mean that the higher the pixel, the better, the higher the pixel, and the higher the size of the photosensitive element. Otherwise, the imaging quality will decrease, the choice of pixels should not be accurate to high pixels. In many cases, if you take a photo with only 5 million pixels at ordinary times, it will be enough for you to save and take a picture, the cost is not as good as the cost of purchasing high pixels around the camera, such as a tripod or a memory card .)

3. There is no need to pursue high pixels. In fact, the current 3 million pixel camera is enough for normal shooting. If you want to take a larger photo and choose a higher pixel camera, we will find that the imaging performance of new machines is not much better than that of old ones. This is because there are some entry-level machines with more than 5 million pixels on the market. In order to reduce costs, although we have adopted 1/1. more than 8 CCD size, but uses 1/2. 5 CCD lenses are only slightly changed. Because they are not significantly different in nature, their imaging quality will not be fundamentally improved, but they also increase the use of storage space in vain, therefore, there is no need to pursue high pixels.
In general, the use of low-quality lenses produces a huge loss to the image quality. These losses far exceed the benefits brought about by the increased CCD size. Therefore, you must pay attention to them when purchasing, there is no need to follow suit.
4. A resolution of 1024x768 is required. During my long-term use, I found that this resolution is sufficient for normal shooting, in addition, this resolution is in line with the resolution of the Computer Monitor (usually 15-inch LCD and 17-inch CRT Display), which can maximize storage space savings, of course, the resolution of 2048x1536 can also be used, because it is exactly twice the resolution of 1024x768, and the image captured with the above two resolutions will not produce a sawtooth phenomenon on the display screen, the usage of other non-standard resolutions is always awkward. Of course, it may not be the aspect ratio when printing at the digital printing store, but it is already a matter of printing the store. (Editor's note: the current resolution of a 17-or 19-inch LCD is basically 1280 × 1024. If you want to use your own photo as the background, we recommend that you use a resolution of 1600x1200 and Photoshop to crop the image, we recommend that you use a resolution of 2048x1536)

5. The best AA battery is the commonly used No. 5 battery. Dedicated lithium battery is a lot of trouble. The biggest problem is that the compatibility is too poor. It is difficult to borrow it from every household. In addition, even if you use lithium battery, it will be mostly bad in two or three years. This is just a trick for manufacturers to increase the income of consumables. So if possible, try to purchase an AA rechargeable battery machine, even if the camera is not used, a lot of household appliances can also be used. (Editor note: This is just the author's point of view. using lithium batteries can effectively reduce the thickness of the product. The current lithium battery also has a large capacity compatible with those made in China, so when you buy a digital camera that uses a lithium battery, you may want to purchase a second battery)

What should I do before buying products with heavy shape and higher performance?

6. Power saving is also very important. Digital Cameras are a power-consuming device. If you choose a power-consuming device, it is inconvenient to use and will seriously shorten the battery life. (Small Editor note: Large-sized LCD and back-and-forth Zoom will increase the power consumption of the camera. Therefore, when pursuing the screen size, everyone should be able to stop it and cannot blindly increase it !)

7. It is best to choose a host that can be directly recognized as a USB flash drive by a computer. In this way, even the loss of random discs will not be a problem in the future. In fact, many consumers do not pay attention to the storage of these infrequently used attachments. (Editor note: It is recommended that you purchase another card reader while purchasing a camera, so that you can directly Insert the memory card into the card reader to enjoy the effect of a USB flash drive, making transmission more convenient, the card reader can be multiple-in-one and one-in-one card models. You can choose one card based on your needs)

8. For memory card selection, I prefer to use an SD card. Although the CF card is cheap, there are too many pins. The more pins, the higher the failure rate. Ms card is only used by Sony, with high price and good performance, but it is still unavailable in general. The XD card is too expensive and is not recommended. (Editor's note: SD card has become mainstream, while the CF card is declining. You should try to choose a camera with a low price and a sufficient number of SD cards)
9. Camera LCD screen. My personal opinion is to pay attention to the number of pixels instead of the size. Many machines use large-size LCD screens to attract customers and reduce costs, but few pixels, the results show a poor effect. (Editor note: the size of the LCD screen of the camera is basically 2.5-inch. The size can be 0.11 million pixels or 0.23 million pixels. The resolution of 0.23 million pixels is higher, and the photo is more expressive)

10. It is possible to select a machine with a manual function as much as possible, so that you can use your creative talent to make a good shot of the art. If it's a pure dumb machine, you will be swollen, lucky enough, P will be a nondescribable, even if the scene mode is more useless. Of course, if you have a dish, I will not say this one. (Editor note: the so-called manual function is to customize the aperture size and shutter speed. In many cases, the ideal photo can be taken only when the characteristic aperture and shutter match, if you want to study photography technology in depth, we recommend that you select a camera with manual functions ).

11. If you want to capture the MM image, of course, you need to choose a fast-response camera. This is quite obvious in the practical process. Of course, if you don't have this hobby, you don't have to worry too much about it. (Editor's note: The Boot speed shutter and focus speed shutter are also an important indicator for measuring digital cameras. You must pay attention to them when purchasing them, in addition, the continuous shooting speed and shutter speed of the machine are also very important indicators. If you want to select a machine with a fast speed, currently, the speed of a consumer-level digital camera is generally 0.8 screenshots/second-2.5 screenshots/second. If the shutter speed is more than 2 seconds, you can capture the gift at night, it would be better if it could be 8 seconds! Currently, the shutter speed of mainstream consumer-level cameras is around 8-seconds ).

What we will talk about here is some icing on the cake. Although it is good, there is no such thing. Let's take a look at it. The ISO sensitivity is less than 100. The camera should have battery discharge function. Do not use a pop-up flash. Optical Image Stabilization is very effective. Of course. High Zoom can pat the vision. Wide angle is far more important than telefocus. Of course, large aperture machines are better than small aperture machines. It is possible to choose a camera with a smaller lens distortion, and the camera mm is more beautiful. When selecting a model, pay attention to the field rate of the LCD display. It is convenient to set the exposure compensation button separately. You must be able to set white balance, rather than just white balance. In addition, interfaces such as USB, AV, and DC must have rubber jacket, and the jacket should not be completely separated from the body to avoid loss. If there is a manual mode, it will take more than 10 s for the slow door. It is too short to be fun at all. You do not have to deliberately pursue the Camera Resolution when purchasing an instance. You cannot use a low-end CMOS sensor. You do not need to care too much about the short film shooting function. You can call 800 or other phone numbers to check whether the purchase is licensed.

In fact, the above content is only suitable for the use of primary users, for high-end consumer and professional level we also need to consider such things as the combination of SLR lenses, I hope you will start from your own needs when choosing a digital camera. Don't listen to the shopping guide around you easily, and talk to other users online. Select a digital camera that suits you!