2012年10月5日星期五
How to capture dynamic picture of the three basic methods
Shutter speed shooting moving objects is very important. Decision of moving objects in the picture is clear, there is an important addition to the shutter speed indicator, that is, the movement speed of the projection of the object on the photosensitive material (hereinafter referred to as the projector). Projector mobile move faster, solidified it, we need the faster the shutter speed.
In many textbooks, have raised some regularity:
• camera from the nearer the object, the faster the moving speed of the ;
• The camera focal length projection of moving faster.
In actual use, if the object close to us, or we use a long focal length lens moving objects "closer", will allow the larger objects in the viewfinder. Therefore, we prefer the distance of the object from the camera and the focal length of the camera together
• moving objects in the viewfinder, the greater the projection of moving faster;
• moving object faster faster the moving speed of the projection; • moving object direction of movement of the closer in parallel to the faster the moving speed of the focal plane, the projection.
In this way, we can be above these laws combined with the , screen to clear or not clear moving objects. Many people like to use aperture priority exposure mode, even in the snapshot of the time, they also find it very convenient aperture priority. The reason for doing this is: aperture changes the series no shutter-changing series If you are using aperture priority, shutter speed is not easy to be beyond the range of the camera can be set; while using shutter priority, aperture value can easily exceed the range of the camera can be set, for example, in the case of low light exposure aperture is often higher than the maximum aperture of the camera is even larger, so it is easy to cause underexposure.
Experienced photographer, even with the aperture priority exposure mode, the shutter speed display in the will also pay attention to, in order to determine the moving objects in the picture may be clear or fuzzy. But for beginners, often too busy to take into account the various parameters in the viewfinder, so need to show the movement of objects on the screen, we still recommend using shutter priority (S) exposure mode. If you use shutter priority, aperture value beyond the range of the camera can be set in the digital camera, we can adjust the sensitivity to change the aperture value, which can be as much as possible to maintain the set shutter speed.
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