First, define the functional parameters.
A classmate who just bought a flash may have a lovely face and only know that it is better than the built-in flash, but he doesn't know where it is. GN value is a digital standard to measure the output power of top flashlights, and it is also a priority factor for us to buy flashlights. Let's not talk about the flashlights of the original factory and the auxiliary factory. Generally, flashlights of high, medium and low levels are divided by the maximum output. One of the biggest functions of GN value is that it can be used when TTL automatic flash mode is not used. GN value = aperture value? Distance? Roughly estimate the conditions for accurate exposure. Knowing this thing, you can set the output power on the flash? Common powers are1128, 1/64/, 1/32,1/6, 1/8,/kloc-0. When the power reaches11,it is the effect of full power on with GN value.
Portrait at night is the photography subject with the highest attendance rate of flash.
High-speed synchronous sampling is also an important consideration when you buy an overhead flash, because it depends entirely on whether you can use the flash to fill the dark part of the model during the day. The high-speed synchronization value is 1/8000s, which can help you shoot with large aperture in broad daylight. Although many students have heard that high-speed synchronization can be used to suppress sunlight as much as possible, the author strongly disapproves of this method: unless you don't mind the life of the flash. On the contrary, the function of high-speed synchronization is of little significance in the studio (the shutter of 1/200s is enough for the studio to shoot at most), so students who buy flash should first know whether to shoot portraits with a large aperture or in the studio.
The high-speed synchronization function is most commonly used to shoot portraits during the day.
Another point is the zoom focal length, but because this focal length is different from the lens focal length we often say, the author calls it the flash range. The flash range can also be set to automatic gear and manual gear. If it is automatic, it will change instantly according to the change of lens focal length. If it is manual, it will change the focal length at will according to its own creative ideas. Take 20mm focal length and 200mm focal length as examples. When the focal length is set to 20mm, it is a wide-angle illumination, and the illumination range is MAX (when using a wide-angle diffuser, the zoom will be automatically set to a wider range of 14mm). When set to 200mm, the flash will focus on a certain point? Light beam? Fill the light, the scope is also the narrowest. After you have a basic understanding of the above three basic functions of flash, you can have fun.
Second, the actual operation points
Practice is the only way to test the truth. If you want to improve your photography skills, it is always king to practice and understand more. There are two modes of flash operation, full-automatic TTL (through the lens) to automatically measure the exposure output flash, and the above-mentioned manual setting of the output flash according to the formula. It can be simply understood as automatic gear and manual gear on SLR cameras, each with its own interests.
The angle of the flash lamp holder can affect different lighting effects.
Whether using TTL or M file, you should understand that it only affects exposure value. What kind of lighting angle do you want, or do you want to change the emission direction of the flash by rotating the lamp holder? When you are indoors, you can turn the lamp holder upward and illuminate the ceiling to get diffused light, so that people's faces can get even light distribution. When you are outdoors, you can't use this trick, but you can still use the eye plate or the flash outside the machine to polish the subject. There is really not much skill in using a single lamp. When you master the single light flash, you start to play the advanced multi-light off-plane flash, and then the real lighting journey begins.
Rotating lamp holder with external flash can eliminate internal flash.
Tell me another important skill? Flexible use of ISO settings. The role of ISO in flash games is a little different from usual. When shooting in low light, we mostly aim at improving ISO, which can improve the shutter speed, but when shooting in flash, its function is to illuminate the subject and become a background object. One thing will never change, that is, the higher the ISO value, the more noise there will be, which proves once again that a full-frame camera with high sensitivity still has its greatest advantage. I use an APS-C camera. Below, you can see the actual effect. When ISO 200/3200/6400(Hi 1) takes photos with warm light, it can be clearly seen that the background is getting warmer and warmer. The price of getting the background color is the soaring amount of noise.
The Important Role of ISO in Flash Shooting: Illuminating the Background
Basically, in the actual operation of the flash, we can grasp the different effects obtained by the output of the flash and the distance between the flash and the object to be photographed, so as to flexibly apply it to subjects such as portraits or still life shooting at night. If a person shoots with an off-camera flash, it's best to buy an extra lamp holder, because the way you hold the lamp in your left hand and the camera in your right hand is very limited in actual shooting. In addition, if you need to hold the lamp in your right hand, you can't hold the mobile phone in your left hand. Unless you have someone else to be an assistant!
Third, you need to use lights.
Buying a flash is not blind. I believe that students who bought a flash also know exactly what kind of photography they want. There are also a wide range of subjects that can be shot in flash, such as still life shooting, portrait shooting, wedding follow-up shooting and so on. As long as you think the light will be seriously insufficient, you can use an external flash to illuminate or fill the light. Many times when we take pictures, we feel very dull, probably because we don't get the light we want. The essence of playing with light in photography is that we make it better when there is good light, and when there is no light, we create light to look like God. Yes, what we want is actually a sense of light and shadow.
Flash can create a special atmosphere and make photos feel more.
But I hope everyone will remember that any photographic technique is not used blindly. For example, when you need to show the integrity of an item to your guests, you don't have to use a flash to partially illuminate it, as shown in the above picture. But if what I need is to display an item on a web page, it can create an atmosphere by partially brightening it, and you can also add text around a black background to enhance the attractiveness of the product. To sum up, the flash is for our use, for our real intention.
Summary:
There are many ways to play the flash of the set-top box. If you want to get started, it is recommended to buy the original flash. Although it is only entry-level, the quality of use far exceeds that of domestic lamps. But that doesn't mean I don't have confidence in domestic products, because how can I buy original top lamps as bad as the author's (laughs). Novices can rest assured to add a flash to the photography accessories, and its existence will definitely make your future photography career better. As the author said above, flashover is actually not difficult to get started.