Monthly Archives: October 2020

In theory, the USB charging cable only uses two wires for power supply (VBus) and ground (GND), and does not involve data transmission, so basically the USB charging cables are similar.

But in fact, it’s hard to say, because the cores of USB cables of different qualities are very different. A better line has more copper wires in the core, but a lesser line has very few copper wires in the core. , Even I have seen only one or two roots. If the quality of the core is poor, it will definitely affect the charging, especially if the output current is more than 2A, the resistance of the poor quality line will be larger, and there is a risk of overheating and fire, and the poor line charging speed It will be slower.

The conversion plug is a small and portable electronic device that allows your electrical equipment to be quickly and easily connected to any power outlets around the world. If you plan to travel abroad, you need to prepare a suitable adapter for the country you are going to, or choose an adapter plug that integrates pins from multiple countries. The purpose of this guide is to introduce travelers to the types of plug converters needed for European travel, so that they can prepare well in advance for their trip. The voltage range used throughout the European continent ranges from 110V to 250V, but most well-known travel destinations use 220V 50Hz. In addition, every country has local electrical standards, and roughly eight types of plugs and sockets are used. Therefore, more specific information can be obtained by reading the specific guidelines of European countries.

From the material of the tripod, it can be divided into these categories: High-strength plastic: Plastic tripods are generally small desktop tripods. Its advantages are that it is cheap and light, but its durability and stability are relatively poor. . Steel: Heavy weight, relatively cheap price, average durability, and very good stability, suitable for photography in indoor environments such as studio shooting and directing studios. Aluminum/magnesium alloy: heavier weight, moderate price, good durability and stability, the advantage is that it is cost-effective, and it is also more suitable for studio shooting and indoor photography. Carbon fiber: very light weight, relatively expensive, but durable, and extremely stable, the effect of anti-shake is also ideal, relatively light, adapt to various environments, but most suitable for outdoor photography, it is the current tripod material on the market The best performance in the

Is it carrying it to hike outdoors, looking for the scenery you want to shoot, or you only need to use it in the studio and a relatively fixed place.

For the former, because it is a walking trip, considering physical strength, we choose a tripod with light weight and high portability; for the latter, without considering weight, we mainly choose a tripod with strong stability.

Choose a tripod according to the device you have. If your device is a micro-single, card camera, camera, or mobile phone with a smaller weight and volume, then you can choose the main light and small-diameter tripod; if it is a SLR or Cameras are heavy, bulky and expensive equipment. Considering that the quality of the photos we take and the need to protect the shooting equipment are proportional to the investment on the shooting equipment, we try to choose a large diameter with good stability and load-bearing ability. tripod.

The current wireless charging has not been able to achieve true wireless charging anytime and anywhere. Instead, the mobile phone is placed on a charger that can be charged wirelessly and conducts electricity through electromagnetic waves, thereby adding power to the mobile phone.

The charging loss rate of wireless charging is currently relatively high, around 30%. Take an Apple mobile phone as an example. One hour of wireless charging is equivalent to 15 minutes of wired charging.
Of course it is needed. The most suitable scenario is in an office environment. Put the phone directly on the wireless charging stand. To read the information, you can reach it in front of you with your hand stretched out, so you don’t need to unplug and plug it in every time. The principle of wireless charging is electromagnetic induction, which is a physical phenomenon in which electricity and magnetism can be transformed into each other under certain conditions. At present, the mobile phone wireless charging base converts electricity into a magnetic field, and the wireless charging coil on the mobile phone can convert the magnetism into electricity to supplement the power of the mobile phone.

In the office, the socket is too far away from the seat, and the line isn't long enough to move half way toward the phone every time you touch it. I'm so sleepy that I don't want to plug in my phone with the data cable at night. Then I forget to charge it. It's too late to repent in the morning

For now, we're still bothered by this charging action, and have to pay attention to the cable being pointed at the interface every time. We are used to this kind of action.

However, when you look back, this charging is also a minor annoyance of life, but we are used to such existence. Wouldn't it be more comfortable without the hassle?

Wireless charging station! Let the charging become free!

The position of the self-timer light: the center of the soft box of the light (that is, the center position of the light source) is facing the hair position of the subject, the lower part of the soft box is facing the face of the person, and the upper part is facing the background behind the person, because of the soft light The center of the light emitted by the box is the brightest, and the four sides will be darker. Usually the center and the edge are separated by 0.8 to 1 level of aperture. Therefore, the brightest light source illuminates the hair, and the hair appears transparent due to large light absorption and increased exposure. Strong sense. Facial reflection is large. Use a relatively weaker light source to balance the light of the face and hair. The upper part of the soft box illuminates the background to enhance the level and brightness of the background. Under normal circumstances, the triangle light does not need a hair style light. The purpose is to make the picture more natural and lifelike. When the position of one lamp is fixed, the other lamp is at the same height at the same time, illuminating the subject from the other side. The application of the ground lamp should not be too bright or too dark , Too bright will make the contour lines of the face and neck disappear, and too dark will lose the meaning of the triangular light, and the transparent and bright feeling will not be produced. Therefore, the intensity of the three lights is the same, and the distance between the light and the subject It is the same. 3. Before using the triangular light, you must use the side light meter to measure the intensity of each lamp to achieve the same, and you can measure the aperture value of the subject illuminated by the lamp. During the shooting, the distance is shortened, and the corresponding The aperture is reduced, the distance is increased, and the aperture is opened. In this way, there is little chance of lighting errors during shooting.

First of all, there are three types according to the fixed position. The first one is adsorbed on the surface of the windshield. I don't recommend this kind of bracket.

Because your phone is placed on the front windshield, it will not only block the line of sight, but it will also crash in the summer if you are not careful.

Moreover, at a certain angle, there are reflections and it is not clear. If there is a traffic accident, the mobile phone holder is loosened on the front block, and it is dangerous to fly to the head. Part of the insurance is not covered.

The second type of mobile phone holder is pasted on the dashboard, which can easily block the line of sight, and there is an adjustable extension arm on this mobile phone holder.
If you stretch the phone too long, you can't see clearly when the phone is shaken. If it's too short, the phone is too far away and you can't see clearly, which is not very useful.

The last kind of mobile phone holder is clipped to the air outlet of the air conditioner. This is relatively recommended, because the holder is placed here, it will not block the line of sight, the mobile phone is not easy to be exposed to, and it can avoid the situation that the screen is not clearly reflected. .

As mobile phones increasingly become a must-have for people, the choice of mobile phone cases has also become crucial

Leather material: The leather mobile phone case looks high-end, elegant and elegant, and has better heat dissipation, but the leather mobile phone case looks more mature and more suitable for business people, and the real leather material is more difficult to find and the price It is quite high, so it is not suitable for casual young people.

Silicone material: This is the most common soft-shell mobile phone cover material. Silicone is soft and elastic, feels good, and is resistant to low temperatures, more environmentally friendly, cost-effective and versatile, making it more suitable for young people.

TPU material: similar to silica gel, TPU has good resilience, low temperature resistance and is not easy to deform, has a variety of patterns, and is rich in color. Compared with silica gel, TPU has the advantages of lower cost, shorter production cycle, and material can be degraded and recycled Reuse, more environmentally friendly. But TPU is harder, and its hand feel is not as good as silica gel.

Crystal material: The so-called crystal case is actually made of plexiglass. This kind of mobile phone case has a thick and firm appearance, and the case is crystal clear. It is very popular with women, but the shortcomings are also obvious, that is, it is low in texture and fragile.

First loosen the fixing screw-then pull up the adjusting clamp, open the adjusting clamp, and at the same time tighten the fixing screw, widen the telescopic clamp, and fix the phone in the clamp.

Connect the wire control to the phone: insert the wire control plug of the selfie camera into the earphone jack of the phone.

Rotate the camera to use the front or rear camera. If you are using the rear camera, you can rotate 360 degrees to the rear mirror of the selfie stick in order to see whether your posture is good or not, so that you can pose in the mirror before taking pictures.

Adjust the distance: Adjust the distance between the stretch rod and yourself by telescoping. The longest stretch can be up to 14 cm.

Take a photo: After posing and adjusting the distance, press a photo button (a camera icon) on the selfie stick to take a photo.