For us, there is nothing more exciting than taking a clear and sharp photo. Many people have this misunderstanding, that is, I bought a high-resolution camera, but the photos I took are still not as sharp as I imagined, which is different from the naked eye. In fact, this is not a problem of the camera, nor is it a problem of the lens. It is just that if you do not handle the small details of the settings properly, the problem of not sharp photos will occur. So how do you take sharp photos? Let’s talk about the camera setting skills.
1. There will be such a problem if the focus is not correct
Friends who are new to SLR cameras often encounter problems with focusing. For photographers who have used mobile phones or card cameras, taking pictures is simply pressing the shutter, and they have no idea about the concept of focusing. The focus of the mobile phone is based on the screen of the mobile phone. When the micro-single does not have touch focus, the camera focus is to press the shutter button halfway, or there is an AF button to focus.
If you want an accurate focus, you cannot rely on the camera’s focus module alone. You also need a focus trick. There is an auxiliary function called focus peaking on the mirrorless camera, which is used to check whether the focus point is aligned, and the top focus area will be covered by a red dot. Therefore, in low light or manual focusing, you can’t rely too much on the camera’s focus measurement module, otherwise it will easily defocus.
You can also use the Lv (live view) mode on the SLR camera, and then use the zoom function to zoom in on the picture, you can see whether the focus area is clear, if you think the picture is not clear enough, you can use this trick to check whether the focus point is correct. Standard, very practical for some manual lenses.
In the selection of focus mode, for subjects that do not move frequently, it is better to use single auto focus, and do not turn on real-time focus, which will reduce the occurrence of right and wrong focus caused by focus shift.
2. This may happen if the aperture is not set properly
Photographers who understand the lens know that the aperture is one of the factors that depend on the depth of field. The large aperture and the long focal length can bring about a very fascinating shallow depth of field. However, shallow depth of field will have a focus problem, that is, it is easy to lose focus, once it leaves the effective range of focus, it will become blurred. This is a phenomenon that only occurs when the aperture is fully opened, and it is not a disadvantage.
For some portrait shots or still life shots, it’s best not to fully open the aperture, and it’s better to shrink it to f/2.8 or more. Even after focusing, the pose of the model will be within the range of the focus point, and it won’t be out of focus. . If you want a larger background blur effect, you can also use a telephoto lens to blur the background.
Sometimes the aperture cannot be opened too small, which will cause the phenomenon of light diffraction. The specific manifestation is that the picture is blurred, the resolution is reduced, and the picture quality is deteriorated. But not every lens will be like this, but when shooting, try to choose the appropriate aperture value and the depth of field is enough, or choose a camera with a smaller frame, the depth of field will increase.
3. The safety shutter is not necessarily safe
When learning to shoot with SLR cameras, I also came into contact with a concept called safety shutter, the principle is that the inverse of the focal length is the speed of the safety shutter. This may be a concept in the low-pixel era. Nowadays, camera pixels are getting higher and higher. The highest full-frame camera is approaching 46 million, and small jitters will be obvious. Therefore, the safety shutter is out of date. I think it should be the reciprocal of twice the focal length to be an ideal safety shutter.
Of course, if the shutter is too low, it will cause the picture to become blurred. Use a tripod or a fixed step for support at slow shutter speeds to eliminate hand shake. Some lenses or bodies have anti-shake function and are also very powerful. It is recommended to turn on for handheld shooting, and turn it off when using a tripod.
Also, when increasing the shutter speed, you have to use a high ISO sensitivity, and at the same time it will increase the generation of noise. Turning on the in-camera noise reduction can effectively suppress the noise, but the clarity of the picture will also be reduced. When the picture details are not very demanding, the ISO sensitivity can be increased appropriately, but if the noise is really unbearable, it is best to add one The fill light increases the brightness, and the flash is also possible.
If it is not deliberately taking an abstract photo, a blurry photo is definitely the culprit affecting the quality of the film. If the exposure problem is not too big, you can adjust the color and brightness of the picture through RAW. The composition is not good, and it can be improved by cropping later. However, a blurry and unclear photo has no use value. The availability of transformation is not great.