Traditional Culture Encyclopedia - Photography and portraiture - How to use the external flash? Skills of external flash
How to use the external flash? Skills of external flash
How to use external flash doesn't need too much extra investment, but after mastering the skills of external flash and using it reasonably, you will get more photography fun and create more and better photography works. In order to make better use of external flash, we adhere to two principles: first, digital cameras with external flash hot start or PC interface must be equipped with external flash; Second, if there is no external flash interface, in order to get good results, try to use synchronizer and flash designed for digital cameras. There are the following skills to fill the light with an external flash: 1. Pay attention to the direction of the flash head and the angle of the lamp holder, and use the reflection law, that is, the incident angle is equal to the exit angle, to estimate the light falling position of the reflected light, so that the light falls on the subject after reflection. 2. The reflective surface is generally light, preferably white, because the flash emits a cold light source, and the white in the light color can be an unmodified reflective light source. Reflective surfaces of other colors will change the color temperature and easily cause white balance errors, while dark surfaces will attract a lot of light, which is not conducive to reflecting light. It is suggested to use white plastic foam board (flat foam board can be selected for all kinds of household appliances packaging boxes) as the movable reflector, which has soft light effect when filling light and good practical effect. Note that when flashing, you can't shoot directly at the glass, mirror or smooth surface to avoid reflection, which can be avoided by changing the angle. Taoqiao-net 3. Select external flash. As far as possible, choose a flashlight with a large adjustable angle up, down, left and right, which will be more convenient and flexible when lighting. Flash lamps with built-in reflectors are generally expensive, or white cardboard fixed with rubber bands is a good and cheap substitute. The size of white cardboard can be controlled freely, and the lighting effect is often better. 4. Because the camera can't accurately measure the exposure when using reflected astigmatism, it is suggested to adjust the aperture and shutter to take pictures according to experience. Compared with traditional film cameras, the biggest advantage of digital cameras is what you see is what you get. You can see the real shooting effect immediately after shooting, and then you can get a picture with accurate exposure by increasing or decreasing the exposure accordingly. 5. When we can't get good results by using only one flash, we can increase the number of flashes and use synchronizers to distribute light from different angles, which will get better shooting results. 6. Most low-end civil digital cameras don't have flash hot boots, and the built-in flash can't be synchronized with the ordinary flash on the market, so the flash synchronizer can't be used. Need to buy a flash specially designed for digital cameras, the price is higher. basis
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