What parameters should I pay attention to when buying a digital camera?

The battery taken out of the camera must be kept away from high temperature and liquid to avoid accidental failure. 2. The camera memory card should be cleaned regularly after each shooting to make more storage space, and the photos taken should be kept in backup to avoid data loss. 3. Sweating during shooting in summer is also a common factor invading the camera. Especially some small digital cameras are easy to hold in your hand when not in use, and sweat can easily enter the camera, and it is easy to rub the sweat on the face around the viewfinder, so it should be cleaned in time. When traveling, it is inevitable to go to the seaside to play in the water or take common means of transportation such as ferries, yachts and small bamboo rafts. Don't forget the splash when you take these water vehicles to enjoy the sea breeze baptism. Please put your wrist strap on your hand when shooting beside the boat. Once the camera falls into the water, don't turn it on with luck. It is the best way to quickly take out the battery to dry the camera and hand it over to the maintenance point. Rainy days are not the most suitable days for shooting in the eyes of many people, but the gloomy atmosphere created by rainy days is also the source of inspiration for lovers' creation. When shooting in rainy days, the camera is easy to drip. It is more troublesome to take an umbrella or put a plastic bag on the camera, but this is to avoid more trouble. In addition, when using the plastic camera cover, it is necessary to pay attention to let the camera breathe at regular intervals. The hot air condensed in the inner layer of plastic bags will also endanger the health of the camera. 6. The temperature is cold in winter, people are prone to catch a cold, and the camera will also have various situations due to temperature changes. Lower temperature will greatly reduce the battery life, and it is even difficult to turn on the battery at extreme temperatures. Cold also has obvious influence on the damping oil in the camera zoom system, so you should prepare a warm coat for the camera or do a good job of preheating before shooting. Professional digital camera maintenance 1. First of all, you need a sturdy and easy-to-use camera bag to hold the camera, digital memory card and battery kit. More extravagant, you need an auxiliary lens or a small portable tripod. A good camera bag uses high-quality raw materials, is durable, can better protect the camera and lens from earthquakes, and has comfortable straps and metal buckles. If you want to buy a new camera bag, you'd better choose a slightly larger one. If the camera bag is too small or just right, it is very inconvenient to take out everything in the bag every time you take something. At present, most camera bags will design corresponding pockets for different photographic equipment and accessories, which can not only protect these valuable equipment well, but also facilitate access. Therefore, when buying a camera bag, it is best to bring the camera and accessories that you often need to carry, and choose a camera bag that is most suitable in all aspects. 4. After using for a period of time, please clean the oil stains and dust on the lens. When cleaning, you can use air blowing with one-way air blowing function, combined with lens pen and suede. Special tools such as lens paper. However, it should be noted that clean products with unknown origin and questionable quality must not be used. 5. When the flash lamp is not used, the battery should be taken out and conditionally stored in the drying oven. Wipe the flash hot boots regularly to ensure the sensitivity of the contacts. 6. The dust on the photosensitive element is annoying, and ugly black spots will be left on every photo. The self-cleaning of photosensitive elements needs to be carefully carried out in an environment with little dust. Stubborn dust that cannot be cleaned can be handed over to the maintenance point for treatment. Do not use irritating chemicals and water when cleaning. 7. The external cleaning of the fuselage is also essential. Whether it is a small domestic camera or a professional SLR digital camera, try to wipe it clean with a soft cloth without debris after use, so that it is not easy to leave stains and avoid eroding the camera surface coating. Matters needing attention in mobile phone maintenance and charging standard for class one