Is it easy to paste? It’s easy to expose? you ‘re right! Slow door is the test of technology

Slow door shooting but need to master the heat, beginners use the slow door often make the image a blur, but experienced people can use the slow door to obtain the charm of virtual and real images, the fun of photography is full of them. < / P > < p > generally speaking, the minimum speed of the hand-held camera should be controlled at 1 / 30 seconds. When shooting, the shutter speed should be at the reciprocal of the focal length to ensure a clear image. At the same time, a larger depth of field can be obtained by narrowing the aperture. < p > < p > weak light is a unique advantage for shooting slow gate. The moving lights in the city, the vast starry sky in the countryside, and the waves on the beach are all subjects of slow gate photography. The following is a brief introduction to the usage of the slow door: < / P > < p > but in fact, because of the special light and shadow effect of foggy days, many common scenes become another scene, bringing infinite reverie and more creative space for photography creation. The fog can create a kind of ink painting effect and make the ordinary scenery more charming. < / P > < p > select the lens and specific object according to the position relationship between you and fog. If you are in the fog, because of the poor air permeability, you can use a wide-angle or mid focus lens to highlight the close range around you; < / P > < p > use a long-time exposure, you will get a more ethereal artistic effect. For example, in order to show the whole process of mountain fog floating over the cliff, slow shutter can be used. According to the light condition at that time, a small aperture, such as F16, 10-15 seconds exposure time, can be used. < / P > < p > how to capture the trajectory of light in the city? Set your digital camera in place, set the long exposure option, and then capture a period of time for the light path that the car will create. It’s that simple, but if you want to get better results, you need a lot of practical work to do. < / P > < p > don’t be superstitious about shooting until it’s late at night. Try shooting at dusk or early in the morning. You can not only capture the light of the car, but also the disturbing light in the sky can set off the atmosphere of the photo. < / P > < p > more vehicles and even pedestrians can make your photos more “dynamic”. Finding a low spot or a high spot overlooking your scene will make the angle very different. In addition, pay attention to the following 8 points, shooting the track will be more sure! < / P > < p > measure the light first, turn the camera to aperture priority, set the aperture to f / 8, and look at the shutter value measured by the camera < / P > < p > in order to take a picture with a long track, we need to adjust the shutter more slowly, so we use the shutter for 8 seconds. However, because the shutter opening time is longer, the aperture needs to be reduced. You can press step Adjust the aperture to f / 11-16. < / P > < p > slow door shooting waterscape should try to choose before sunrise or after sunset time, because there is sufficient light in the daytime, even if the aperture and sensitivity are adjusted smaller, long-term exposure will make the photo overexposed, unable to achieve the correct exposure, and the shutter shortening can not produce the effect. < / P > < p > the most suitable for slow gate waterscape photography is the morning and sunset in autumn and sunset. When you feel that the sky is just right, that is, when the human eye is most comfortable with the light, Hao Jiyou photography suggests that you should not rush to shoot. At this time, wait for five to ten minutes to make the light darker. Press the shutter at this time, and you can wait for a perfect long exposure work. < / P > < p > so when shooting, try to find a kind of still life to match the waterscape. A rock, a bird or a fallen leaf can be used. As long as it is immobile and can stay still in the process of long-term exposure, it can be combined into the picture. < / P > < p > to shoot fireworks with a slow door, the first thing to do is to find a good place, set up the tripod, and connect the shutter cable. Try to set the focal length as far as possible in the passive focusing mode; the ISO setting should not be too high or too low, too high will produce noise, too low will lead to insufficient exposure, generally between 200 and 400. < / P > < p > it usually takes 5-6 seconds for a fireworks to rise, explode and disappear, and the most beautiful time should be the first 2-3 seconds, so the camera shutter is generally set at 2-3 seconds. < / P > < p > if you want to shoot a complete fireworks, but you can’t let the next fireworks affect the picture, you should open the shutter when the fireworks rise, and close the shutter when the next fireworks appear or even before the fireworks disappear. < / P > < p > when we are shooting fireworks, the whole environment is very dark, so the automatic focusing mechanism of the general lens will be greatly reduced, so don’t believe in auto focus at this time, and choose manual focusing shooting. < / P > < p > good camera friends suggest that you go to the shooting site to take a picture with auto focus before the fireworks bloom, and then zoom in to see if the surrounding environment is clear. If it is clear, keep the focus still, and then change the focus mode of the lens to manual focus. If it is not accurate, fine tune the focus. < / P > < p > sometimes people tend to think too much about how to set the exposure, but in fact, the fireworks are bright. You don’t need to pull the ISO of the fuselage very high or you have to have a large aperture lens to ensure enough light input as you shoot the sky. < / P > < p > so let’s put the camera in manual mode and set everything up. First of all, we need to keep the ISO in the range of 100 to 200, and then adjust the lens aperture to f / 8 as the starting point. Sometimes we even need to use smaller apertures such as F / 11 or F / 16. < / P > < p > the shutter speed can start at 1 / 2S or 1s, and then further fine tune the shutter speed according to the actual shooting requirements and the interval of fireworks discharge. However, when shooting, you should also remember not to be blinded by fireworks and forget the shooting work. < / P > < p > it’s also important to note that if your camera comes with a flash, don’t forget to turn it off when shooting. The flash is not only of no help to shooting fireworks, but also affects people watching fireworks. < / P > < p > the city night scene photography is a kind of photography performance, and it is also a scene that photography loves the latter more easily. At this time, we can shoot charming night scene with slow speed. < / P > < p > it is usually necessary to slow down the shutter speed with a small aperture as far as possible, or use a slow shutter speed according to the speed of traffic flow to shoot beautiful light and shadow in the city night scene. < / P > < p > and it is very important to shoot the city night scene at the blue time. That’s the way to make sure the sky has details. How do you determine the blue moment? The following is a detailed explanation for you. < / P > < p > Blue moments usually appear between half an hour and an hour after sunset. Although the sky appears dark black to the naked eye, most of the sky shows a charming gem blue after a long exposure of several seconds or even tens of seconds by the camera – this stage is called blue moment. Due to the change of seasons, the setting direction of the sun is not necessarily due to the West. In summer, the sun sets in the direction of northwest by North, and in winter the sun sets in the direction of South by West. In any case, the shooting time of the climbing party is closely related to the direction of the sunset. < / P > < p > so forget about the southeast and northwest for the moment, and make a line between the sun setting position and your seat. This line is taken as the 0 degree line, and then it is rotated clockwise to divide it into 90 degree line, 180 degree line and 270 degree line. The time for the four directions to enter the “blue moment” is not consistent, basically as follows. < p > < p > 180 degree direction, 20 minutes after sunset, when the 0 degree direction is relatively bright, the 180 degree direction has already darkened, it first enters the “blue moment” and stops at 50 minutes after sunset. < p > < p > 90 degree and 270 degree directions, the sky in these two directions presents obvious brightness gradient due to the gradual relationship between the West bright and the East dark. It enters the “blue moment” about 30 minutes after sunset, and ends at 60 minutes after sunset. In the second half of the “blue moment”, the gradual change of brightness gradually becomes uniform. < / P > < p > 0 degree direction. This direction is the last darkening direction due to sunset. It enters the “blue moment” about 40 minutes after sunset and ends at 70 minutes after sunset. < / P > < p > the above is roughly divided, which depends on the degree of atmospheric permeability and the direction and amount of cloud cover. Obviously, if you want to shoot in all four directions on the top of a building, the first thing you need to shoot is 180 degrees; the second is 90 degrees and 270 degrees; the last is 0 degrees. Only in this way can you guarantee the maximum shooting time and success rate. On the contrary, you can only miss a good opportunity or be in a hurry, so you are not a qualified climbing party. < / P > < p > this method is not used by many people, but it is the best method for slow photography. Make sure that you are in the dark sky, and then use very slow speed, usually a few hours of exposure, to record the stars in the night sky orbit around the attitude. Sometimes, in order to increase the light and shadow changes of the picture, the method of artificial light supplement may be used to illuminate the foreground or decorate the picture. < / P > < p > maybe some photographers have heard of colorful star orbit, the effect is very cool, and the shooting method is very simple. As long as the white balance is set to daylight mode during shooting, the saturation can be greatly increased in post-processing. < / P > < p > when operating in this way, it must be noted that objects with too bright colors should be avoided in the early stage of shooting, otherwise, when the photo saturation is increased in the post-processing, the color in these places will be too saturated. < / P > < p > when shooting the galaxy with slow gate, the whole galaxy can not be captured due to the limitation of focal length. At this time, this problem can be solved by splicing. < / P > < p > If an ultra wide angle lens is used, the picture is usually composed in a vertical frame, and a row of photos are taken, which are obtained by splicing later. If you use a wide-angle lens, you should use a vertical frame composition, take two rows of photos, and then get them by splicing. When shooting, every two photos should overlap at least 1 / 2 to 1 / 3 to facilitate later splicing. < / P > < p > take pictures of dancing dancers with slow doors, and show the graceful dance steps with illusory tracks. Against the background of dark tone, the picture is more artistic. < / P > < p > when shooting, in order to accurately present the dancer’s posture and grasp the rhythm process of the dancer, it is necessary to accurately control the lighting on the scene, so as to ensure that the light will shine on the dancers in the process of long-term exposure. < / P > < p > the camera can use 100 ISO, and the aperture can be set at about F8. Many people will ask what the shutter speed is, and the time required for the model to complete each action is different, so there is no fixed shutter time, basically between 2S and 8s. < / P > < p > the following is very important. The shutter mode uses the b-gate mode, so that the model can be accurately shaped by flashing lights when jumping or modeling. What is slow door? Usually, people call the shutter speed below 1 / 30 seconds as slow gate photography. How to shoot the slow door? The key lies in two words: slow and steady. < / P > < p > when the shutter speed exceeds 30 seconds, we can clearly record the details of the scene, smooth the fluctuation of the sea water, and even capture the stars that we seldom care about. < / P > < p > 30 seconds is optional for most cameras