Misunderstanding of digital camera setting skills

Although there are skills in camera setting, there are also skills that are a bit wrong. You can't believe it all. After all, you have to explore their principles to solve the problem. The following is carefully organized for you. I hope you like them.

Five misunderstandings of digital camera setting skills

White increases black and reduces security.

I believe many people have heard of the technology of whitening and blackening. This is a technical term used to adjust exposure, which means to increase exposure in bright places and reduce exposure in dark places. The literal explanation is correct, but if you blindly follow this principle in actual shooting, problems will arise.

The increase of white and the decrease of black are related to the data measured by the camera. We know that the standard of camera photometry is 18% gray scale, which is equivalent to the human eye not feeling bright or dark brightness when watching. Generally speaking, the exposure value given by the camera is the brightness level of 18% gray when the exposure index is 0. Exposure index above 0 is gray, brightness is greater than 18%, less than 0 is gray, and brightness is less than 18%.

Because the camera has such exposure characteristics, when shooting a dark scene, the camera will automatically increase the brightness to 18% gray, and when shooting a bright environment, the camera will automatically reduce the exposure to 18% gray. But the dark places in a photo should be dark, and the bright places should be bright. Exposure value, who has been shooting with the exposure meter pointing to zero, will show gray in both black and white. This is especially obvious when shooting snow scenes. When snow is exposed to gray, it will look dirty.

Therefore, whitening and reducing black is to increase the exposure when shooting a bright scene, so that the bright part can recover its due bright exposure, while reducing the exposure when shooting a dark scene, so that the black part does not turn gray and the original color of the object can be restored.

There is nothing wrong with this truth, but the metering modes on digital cameras are obviously much more than those in the film era. In different metering modes, the law of whitening and reducing black will have different performances, which makes people feel puzzling. In addition, if you encounter the environment in Gao Fancha, whitening and blackening will be even more powerless. If you stick to this rule to shoot, you will eventually flinch from photography.

There are all kinds of situations, mainly because the camera's tolerance is too far from the human eye, so we can only choose between bright and dark parts. It is best to use the operation principle of whitening and reducing black under average metering. When shooting in Gao Fancha, adding white and reducing black may not meet your shooting requirements. At this time, use manual exposure, carefully consider the shooting effect, decide whether to keep the bright part or the dark part, and then adjust the camera exposure value to obtain a larger backlight effect or silhouette effect.

With optical image stabilization, everything will be fine.

With optical image stabilization, the photo will not shake. This is promoted by manufacturers, and so are consumers. Optical image stabilization has indeed saved many situations in the past, but optical image stabilization is not a panacea. Even with optical anti-shake equipment, there will still be many shaking photos.

Optical anti-shake, whether it is lens anti-shake or sensor anti-shake, has the function of preventing the photo from blurring caused by body shake, which has a miraculous effect on shooting under slow shutter. Note that this is to prevent camera shake from causing the failure of taking pictures, that is to say, using the bad habit can not reduce your hand shake, but it will reduce this influence to some extent. Therefore, the most fundamental problem of blurred photos is hand shaking. Optical anti-shake can reduce this effect, but it is hopeless if it shakes too much.

One more thing, the manufacturer's anti-shake level is usually equivalent to how many exposure steps have been added. For example, now the shutter speed is110s, and the third step is 1/80 shutter speed. Then if you hold the camera at110s, the photo will be blurred, but at the shutter speed of 1/80s. Explain that this anti-shake function is effective for you. If the camera is still 1/80s unstable, the photos will still shake and blur, so let's get on the tripod honestly.

There is a saying that the safety shutter should be equal to the reciprocal of twice the focal length of the lens, that is, when using a 50mm lens, the safety shutter is1100s, which means that using a shutter of1100s or even faster can ensure that your shooting will not be blurred because of hand shaking. But it actually varies from person to person. After all, everything is so difficult for people with trembling hands.

In addition, optical anti-shake is a function of actively correcting the blur caused by camera shake, so when using tripod, the absolutely stable body and optical anti-shake will interfere with normal shooting and the picture may become blurred. So when shooting with a tripod, turn off the optical anti-shake function.

Using shutter priority can ensure shutter speed.

There are many professional gears in SLR and mirrorless cameras. In addition to the manual exposure file of M file, there are two common semi-automatic files: A file aperture priority and S file shutter priority. Compared with M file, A file and S file have two parameters: aperture and shutter, one of which can be customized and the other is calculated by the camera according to the photometric results.

Compared with manual transmission and automatic transmission, semi-automatic transmission has certain maneuverability and is not difficult to control, so many people like to use it. However, many people have some misunderstandings about the priority function of S shutter. Compared with the A-file aperture, it has higher requirements for the environment, so it is normal that the S-file can't shoot the desired effect. Let's talk about why in detail.

Shutter priority means that the shutter parameters can be set freely, and the aperture value is set automatically by the camera. This makes many people think that the shutter priority is that you can set the shutter value at will, and you can set a high-speed shutter when you need to take a snapshot to shoot what you want. However, unlike aperture priority, there are fewer hardware bottlenecks in aperture priority, and the shutter parameters automatically set can usually range from 30 seconds to 1/8000 seconds. No matter what kind of aperture is set, most scenes can support the corresponding shutter value.

S shutter priority, aperture index automatically set. If the shutter speed is set to high speed, both ambient light and lens aperture are required to meet the conditions. There are many advantages of large aperture, but the price of large aperture lens is also very expensive. If shooting birds and animals, the shutter must be above1/500 s. In the case of poor ambient light, without the support of large aperture, the effect of shutter priority shooting is often underexposed.

At this time, there is no need to spit out the S file, and the camera performance is high or low. After all, there is a limit to the product, but a large aperture is even more rare, and it is even more limited when using the shutter priority file. S files can still be shot smoothly in sunny places. If you want to use the S file with less restrictions, you can change the lens with a larger aperture to relax the restrictions.

AF-C function realizes the great cause of focusing

There are usually many focusing methods for SLR and mirrorless cameras, which can be divided into single focusing and continuous autofocus. These two focusing functions correspond to different shooting types. Single focus is suitable for general shooting, mainly shooting static objects, while continuous autofocus function is recommended for shooting moving objects according to the manufacturer's statement.

AF-C is what we usually call continuous autofocus. After pressing the focus button, the camera will start the lens focus motor and keep focusing until the button is released. When the object in the picture moves, it will keep the focus on the object. Mainly used to capture dynamic objects.

The AF-C function is usually combined with high-speed continuous shooting, so that every photo can be in focus when capturing high-speed moving objects. This is everyone's understanding of the function of AF-C, but in actual use, some photos of continuous shooting will be out of focus. This is not to say that the function of AF-C is superficial and the actual operation is not practical, but that this function needs cooperation in many aspects.

The focus efficiency mentioned by the manufacturer usually only refers to the focus response speed of the focus sensor, while the actual focus speed is determined by the focus response speed of the camera and the driving ability of the lens motor. Therefore, the failure of AF-C function is probably due to the insufficient driving speed of the lens motor, which makes the lens unable to focus on the focal plane and the object has left.

SLR cameras and mirrorless cameras have different lens structures and use different motor technologies. Ultrasonic focusing motor is better in focusing speed and focusing response, while mirrorless camera is more flexible in driving than SLR lens because of its smaller lens. Therefore, in terms of AF-C function, today's mirrorless cameras have even better performance than SLR cameras, which is also reflected in video shooting.

Therefore, the application of AF-C function is more suitable for shooting moving objects moving in a small range near the focal plane, while moving objects horizontal to the lens may lose focus because of moving too fast, which makes the continuous focus tracking function unable to keep up with the moving speed of the objects.

Auto-focusing function of SLR shooting video

Video shooting supporting autofocus is the most basic requirement for cameras, but this function has undergone a long evolution in SLR cameras, and it seems that it is not very mature at present. Many friends heard that the video shooting effect of SLR cameras is good, and they rushed to buy them. When they got home, they found that it was not a good photographic equipment.

Because the focusing principle of a SLR camera is different from that of a camera or even a card camera, although the video shooting function has been introduced for a long time, there has never been a SLR camera that supports the continuous autofocus function, and only supports a single focusing operation, that is, focusing can be achieved by pressing the focus once, and continuous autofocus will not occur when shooting.

At present, SLR cameras have finally made great progress in the continuous autofocus function, which supports continuous autofocus, but the overall efficiency is not very high, mainly because the driving technology of different lenses is different and the camera finds the focus in different ways, so when using continuous autofocus, the effect of SLR cameras is still not as good as that of cameras or mirrorless cameras. Manufacturers are constantly updating the driving motor technology of new lenses, but after all, it is impossible to update all lenses. Limited by the system hardware, SLR cameras can never play a good role in video continuous focusing.

Shooting video with a SLR camera is obviously not the same as using a video camera, but the video effect is really better. To get the experience like a camera, you need to install various camera accessories or have superb photo-taking skills, which are obviously not suitable for ordinary users. Therefore, considering the SLR effect and good video shooting experience, the recently popular mirrorless camera is more suitable.

Detailed explanation of using skills of digital camera

Skills of using digital camera: Pay attention to setting camera parameters before shooting.

Most digital cameras provide various settings in the settings menu. Including image resolution, focusing mode, aperture, shutter and other items, of which the most commonly used is image resolution. Many cameras offer multiple resolution options. For example, there are five settings for Agfa 1280, namely 1280×960, 1024×768Hi, 1024×768, 640×480Hi and 640×480. Most cameras have preset settings. If you don't use the camera for a period of time, such as 30 minutes, the preset settings will take effect automatically when you restart. Therefore, before each shooting, especially after replacing the battery, you need to check the camera's setting menu again to confirm the resolution and aperture settings, otherwise it is very likely that the photos taken will not achieve the expected results.

Tips for using digital cameras: Try to shoot at the highest resolution.

When using digital cameras, the processed photos have only a very limited resolution-even high-end cameras, let alone low-end cameras. In low-end digital cameras, the resolution of photos ranges from 640x480 to 800x600dpi. This is not a very high resolution compared with traditional cameras. But compared with the graphic resolution of PC, it is already very good. In fact, most web images are smaller than 640x480dpi. If measured by this standard, the resolution of digital cameras is still very good. However, regardless of the function of the digital camera, the resolution that can be achieved is still limited.

Skills of using digital camera: using lighting conditions correctly

Most digital cameras can only take pictures in perfect lighting conditions. Before taking pictures, you must find the best lighting conditions.

Using more sensitive CCD chip is an effective way to reduce the limitation of lighting conditions of digital cameras. Another factor of digital photography is that some types of lighting have different effects on different cameras, which is also true for conventional photography.

For low-end digital cameras, natural light is really the best. You can also use desk lamps and camera lamps, but you need to control the lights to be direct, because the low resolution of light and camera will offset the efforts to obtain excellent and continuous tones. In order to make the best use of sunshine without taking pictures outdoors, you can set up a table with a white poster board as the background and put it next to the window to receive as much sunshine as possible in one day. At present, sunlight completely or partially covered by clouds is the best light source for digital cameras.

Skills of using digital camera: use flash carefully

Many digital cameras have built-in flash. There are usually four settings: flash, no flash, red-eye flash and automatic flash. The last one is to let the camera decide whether it needs extra light. In many cases, the flash may destroy a perfect photo, or make mistakes that will be hard to clear in the future.

For digital cameras used by fools, most automatic flashes occur in cloudy weather. You can get better results by turning off the flash and then increasing the exposure. Flash is not as easy to control as exposure, and the light emitted by flash is easily reflected by nearby objects, forming an uneven halo in the photo. Therefore, please try to turn off the flash when taking pictures in cloudy weather, sunset or other unsatisfactory lighting conditions. The infrared light emitted by the flash will affect the image, because the image is processed by the CCD chip.

Skills of using digital camera: adjustment of color temperature

Friends who are familiar with traditional photography know that color film can be divided into daylight type and illumination type, in order to adapt to different light source environments. The color temperature of solar greenhouse is 5000K, and the color temperature of halogen quartz lamp is 3200K K. ..

In addition, a certain number of memory cards should be prepared to avoid missing the wonderful shots due to insufficient storage space during shooting.