Digital Camera Maintenance

Digital cameras, such as precision instruments, are no more durable than traditional cameras. Some users place digital cameras in closed cars in the daylight. The high temperature not only changes the plastic shell, but also reduces the service life of digital cameras. In addition, protection measures should also be taken when it rains, because digital cameras are not traditional cameras. Once the circuit board is infiltrated into too much rain, a short circuit will not be saved!

1. LCD Maintenance
On the LCD, the most common thing is to have finger fingerprints or some dirt and dust. It seems that it is not very glorious. Generally, it can be carefully crafted with glasses cloth or a magic cloth produced by the "3 m" Company, can be used to wipe, remember to gently wipe, do not use strong glass detergent, because some digital cameras LCD surface has a strong anti-glare film, this film once damaged, repair is unavailable and is not covered by warranty. In addition, you can also purchase screen protector. As long as you take it back and crop it to a proper size and paste it on the LCD screen, you can prevent the chance of the LCD screen being scratched and scratched!

2. Lens Maintenance
After the camera is used, the lens will be more or less dusty, and the dust on the camera will cause the quality of the photo to be developed. Therefore, the lens maintenance is very important. Generally, the dust on the mirror is removed by blowing the ball first. If you skip this step and wipe the dust on the mirror, it is equivalent to grinding the lens with sand, which directly causes the mirror to be damaged. Then, use a special lens cloth to wipe stains from the center to the outside. If you want to use a special lens cleaning liquid, first stick it to the cloth and then wipe it on the lens, you can't just drop it onto the camera!

3. Moisture and mildew resistance
When you purchase a digital camera, you may also need to purchase a simple sealing moisture-proof box and desiccant. The small moisture box is about 250 yuan, and the medium size is 450 yuan. The space is already very sufficient for storage of consumer-type digital cameras, storage cards, and subsequently burned optical disks. If you want to protect your customers once and for all, you can purchase an electronic moisture box to store them. You can also strictly control the temperature and humidity.

4. Use of storage media
Of course, the memory card is not always not bad, although the current market of the memory card is thin and short, but it is not diamond is not bad, can not withstand strong plugging or compression and other actions. In addition, some users often make the mistake of taking out the storage card from the camera or shutting down the memory card directly. In fact, many times the memory card is being stored, and the stored files may be destroyed, it may also cause permanent damage to the memory card.

5. Use of movable Joints
A digital camera is a high-tech electronic precision product, so do not expect it to fall to the ground to maintain the highest quality of operation. Especially when digital cameras require rotating lenses, LCD screens, and other functions, be careful when shooting videos conveniently, otherwise, the entire camera will not work if it is destroyed!

6. Maintenance of rechargeable battery
Unlike traditional cameras, digital cameras have a high demand for electricity. Generally, 70 to cameras are used ~ The upper and lower limits of 120 minutes. Both Ni-Mh and lithium rechargeable battery have their own usage skills. Ni-Mh rechargeable battery has a memory effect. Try to use the battery power before charging. Generally, the battery can be charged for 300 ~ About 500 times; if it is a lithium battery dedicated to a general digital camera, after several hundred times of charging, the battery will also aging phenomenon, it is recommended that you buy an additional battery at first, otherwise, we will not be able to find the zero components of the current camera model after year 35. In addition, when the camera may not be used for more than a month, you must first take out the battery and store it in another place to avoid unnecessary dangers to the machine, this is especially important for the use of non-rechargeable battery!

Lithium-ion battery rarely has the memory effect of nickel-cadmium battery. The principle of memory effect is crystallization, which is hardly produced in lithium battery. However, the lithium-ion battery capacity still drops after multiple charging times, because of its complexity and diversity. The main reason is the change of the positive and negative electrode materials. From the molecular level, the structure of the holes containing lithium ions on the positive and negative electrodes will gradually collapse and block. From the chemical point of view, the positive and negative electrode materials are active and passive, other Compounds with stable side reactions are generated. Physically, the cathode material may gradually peel off. In short, the number of lithium ions that can be freely moved in the battery process is reduced. Over-charging and over-discharge will cause permanent damage to the positive and negative poles of the lithium-ion battery, which can be intuitively understood from the molecular level, excessive discharge will lead to excessive release of lithium ion in the negative carbon electrode and collapse its layered structure. Excessive charging will hard pack too many lithium ions into the carbon structure of the negative electrode, and some of the lithium ions can no longer be released. This is why the lithium-ion battery is usually equipped with a charge-discharge control circuit. Unsuitable temperature will lead to other chemical reactions in the lithium-ion battery to generate compounds we don't want to see, so there are protective temperature control diaphragm or electrolyte additives between the positive and negative poles of many lithium-ion battery. When the battery is heated up to a certain extent, the composite membrane is closed or the electrolyte is changed. The internal resistance of the battery increases until the circuit is broken, and the battery does not warm up, ensuring that the battery charging temperature is normal. Does the deep charging increase the actual capacity of the lithium-ion battery? The Experts clearly told me that this is meaningless. They even said that the so-called use of the first three full-filled "activation", in their knowledge of the two doctors, can not figure out what is necessary. However, why does the battery information capacity change after many people are fully charged? It will be mentioned later. Does the deep charging increase the actual capacity of the lithium-ion battery? The Experts clearly told me that this is meaningless. They even said that the so-called use of the first three full-filled "activation", in their knowledge of the two doctors, can not figure out what is necessary. However, why does the battery information capacity change after many people are fully charged? It will be mentioned later. The lithium-ion batteries used in laptops are generally equipped with management chips and charging control chips. The management chip has a series of registers, including capacity, temperature, ID, charging status, discharge times, and other values. These values gradually change in use. I personally think that the main function of "One month after use should be fully filled" in the usage instructions of the laptop should be to correct improper values in these registers, so that the battery charging control and nominal capacity are consistent with the actual situation of the battery. The charging control chip mainly controls the battery charging process. The Charging Process of a lithium-ion battery is divided into two phases: Constant Current charging (when the battery indicator is yellow) and constant voltage current decreasing (the battery indicator is green. In the constant current and fast charge phase, the battery voltage gradually increases to the standard voltage of the battery. Then, the battery voltage is transferred to the constant voltage phase under the control chip, so that the voltage will not rise to ensure that it will not overcharge, the current gradually decreases to 0 as the battery increases, and the charging is completed. The battery statistics chip records the discharge curve (voltage, current, time) to sample and calculate the battery power. This is the wh we read in battery information. The discharge curve of the lithium-ion battery changes after multiple use. If the chip has never been able to read a complete discharge curve again, the calculated power is inaccurate. So we need to deeply charge the battery chip. Our opinion on battery maintenance is: 1. you do not have to make sure that the power is fully charged every time. for a period of time, you can perform a deep charge under the Protection Circuit Control to correct the battery power statistics, but this will not increase the actual capacity of your battery. 3. batteries that are not used for a long time should be placed in a shaded place to reduce the rate of inner passive reaction. 4. The protection circuit cannot monitor the self-discharge of the battery. For battery that is not used for a long time, a certain amount of power should be charged to prevent excessive discharge caused by excessive discharge in the storage of the battery. In fact, there is not much attention to the use of battery, in other words, it is not too useful. How many times can a battery be used? The difference may be more from the individual differences in the battery itself, rather than the method used.

To store cameras for a long time, you must take out the battery in the machine to prevent the battery from flowing into the corrosive body. Shutter, selfie machine, counter and mirror must be released to reset it, camera with internal light measuring device also need to open the lens aperture to the maximum, so that the light measuring dial to relax, so as not to pull the spring elastic decline.

When storing cameras, you should also pay attention to moisture and mildew prevention. Especially in the plum rain season in the south, the temperature is high and the humidity is high, which is easy to breed mold, in the past, we had to clean the fingerprints and dust on the leather covers, body and lens. 135 cameras should pay special attention to the landscape MIIT, body back cover, and leather back, the reason is that the photo recipient's eyelashes, eye frames, and noses may touch these places and leave some oil. Once the temperature and humidity are appropriate, the mold will first breed in these places. Remember: The camera leather covers should be separated from the body and lens, because leather covers (especially leather products) are more moisture-absorbing and moldy. It is best to use a dry box in a humid environment, but the imported dry box sold on the market, although known as "external (Shell) Strong (hard) in (room) Dry (dry )", however, it is made of plastic and the price is very high. If you create a drying box, you only need to find a large biscuit iron cylinder, enclose the foam plastic into a cylinder, pad the bottom, and then fill the lid, and place the outsourcing nylon silk in the iron cylinder. Put the color-changing silica gel particles into four small bags and place them in the interlayer between the four corners of the iron cylinder and the foam plastic. A very practical drying box is ready. Dark blue color silica gel easily absorb water, will gradually become pink, then we will take out the bag, use a hair dryer to dry it, you can also turn the snake skin lamp or bedside lamp shade over, mouth up, pour the silicone into the shade to dry, so that it restores the dark blue.