Skills to improve the clarity of photos

Many beginners in photography have encountered this problem. The photos taken are blurred and the imaging is not clear enough. Compared with other people's photos, there is a big gap. I think something is wrong with my camera. But in fact, photography is not only the art of composition and framing, but also some foundations of photography. Below I sorted out the skills to improve the clarity of photos. Welcome to read the reference!

1. Safety shutter

To make photos sharp, the first condition is not to shake when taking pictures! An important reason for camera jitter is that the shutter speed is too slow. Keep in mind the secret of the safety shutter when shooting in hand. The calculation method of the safety shutter is very simple, that is, U safety shutter = 1/ lens focal length.

For example, I am now shooting with a 60mm lens and holding the safety shutter 1/60 seconds; When shooting with 200mm, the hand-held safety shutter is 1/200 seconds. 1/200 seconds, try not to slow down, or your hands will shake easily and your photos will be blurred.

But someone will ask u, "I have a 10mm fisheye lens, but why does my hand shake when I use the shutter of110 second?" In theory, if you shoot with a safety shutter according to the focal length, there will be no hand shock, but in fact, everyone has physical restrictions on holding a camera and cannot be too long. I suggest that you don't hold it slower than 1/60 seconds at any time, otherwise, how to calculate the safety shutter may make the photo unclear.

2. Turn on the anti-shake function

Turning on the anti-shake function can also reduce the jitter of photos, so as to get clearer photos. Now many new lenses have anti-shake function, but pay attention to the anti-shake level of the lens. For example, the lens has a built-in four-level image stabilization. When shooting with 200mm, 1/200 seconds is generally used as the safety shutter. With anti-shake, it can slow down to115 seconds. But remember that the anti-shake function is not omnipotent, and everyone's unstable hands can also lead to blurred photos. The shutter speed of hand-held photography should not be slower than 1/60 seconds.

Anti-shake is also divided into body and lens anti-shake, and the camera itself has anti-shake function. No matter what lens is installed or not, it can be stabilized by the camera body. However, at present, not many manufacturers have introduced this function, and the optional space is small.

3. Maximum aperture = best photo quality?

Of course not! Although a large aperture lens can have a shallow depth of field, there will be dark corners around it when the aperture is fully open. Adding a large aperture will make the subject focus clearly, but the edges will become loose and blurred. Yes, this may be good for portrait photography, but it is problematic for landscape photography or wide-angle photography. Try to shoot the building with a large aperture. Maybe the middle of the building will be clear, but the place next to it will be loose, which may not be obvious at that time. When I got home, I found it was too late to have an accident.

Reducing the aperture appropriately can improve the problem. Generally, reducing the aperture by one level will make the image sharp and the depth of field effect will not be much different. I suggest that when shooting scenery or buildings, you can turn off the aperture to f/5.6 or f/8, so that the lens image will become sharp, and other parts will not be loose or the foreground will be blurred, so as to ensure that all scenes can be focused correctly.

4. Minimum aperture = best photo quality?

Beginners should ask u again after reading the above, so if I adjust the aperture to f/22 or even smaller, I can make the photos very sharp. I really want to tell you that you are too young. Narrowing the aperture makes the light wave need to narrow the range and enter the aperture, and then disperse, which will easily make the light wave overlap or unstable, affect the light wave path, and finally reduce the imaging quality. This phenomenon is what we call diffraction.

That sounds complicated. Simply put, a large aperture is not necessarily the best, and a small aperture is not good. When shooting landscapes or buildings, it is best to keep the aperture between f/8Cf/ 1 1. Too small aperture will easily degrade the image quality. If you don't believe in T, you can try shooting in the same environment with f/8 and f/22. The picture quality must be better than f/8.

Let me tell you a little secret. Some photographers want to take the sharpest photos, and they will choose to lower the maximum aperture by two or three levels. For example, for a lens with a maximum aperture of f/2.8, the clearest imaging should be between f/5.6Cf/8. However, this value varies from person to person. It's best to take photos by yourself, or enlarge the photos after taking photos to see which aperture value has the best picture quality.

Step 5: Filter

If the filter is not kept clean, it will make the photo not sharp enough, and even have a direct impact on the composition, so the photographer should regularly clean the fingerprints, grease, dust and so on on on the filter. Moreover, the poor quality filter has uneven light transmission and coating color, which is prone to polarization and reduces sharpness, thus the photo is not clear and sharp enough. Novices don't worry about spending money. A good filter will accompany you for ten years and eight years.

And put different filters on different occasions. For example, if you want to take clearer photos under the sunshine and blue sky, remember to install a C-PL polarizer to reduce light refraction. In places with large light differences, such as sunset and ground environment, more nd antireflection mirrors or GND gradient gray filters need to be used. The photos taken in this way will be brighter in color and more in line with the image of novice composition.

6. Face recognition function

Not all cameras have this function, but if your novice camera has face recognition function, it will be much more convenient to focus correctly. The face recognition function does not need to consider the position of the portrait in the photo. As long as he/she appears anywhere in the phase, the camera or lens will automatically recognize the face, and the focus will automatically select the face of the nearest camera. In this way, you don't need to spend time moving the focus, but you can spend more time on composition and adjusting camera settings.

In recent years, some digital cameras and even lenses have the function of face recognition, which can not only track human eyes, but also identify left and right eyes. This is very useful for taking portraits, because many times the aperture is fully open and the eye position is easily out of focus. Use this function to ensure accurate focusing.

7. Flexible focusing method

Nowadays, many cameras have at least three focusing methods, but many novices may not notice them. Take Nikon as an example, there are already four types: AF-A, AF-S, AF-C and MF. Canon also has three modes: one beat, AI focusing and AI servo. Knowing how to use these focusing methods in different situations is actually very helpful for taking clear photos.

AF-S and One Shot stand for single focus. For example, when shooting static objects or landscapes, the camera will lock the focus distance after selecting the subject and focusing by half pressing the shutter. The main body of the photo will be clear, and other scenery may be blurred. Give everyone a TipsU lock to focus, you can not let go or press the shutter immediately, and then move the camera to re-compose, the camera will not refocus, which is the usual practice of many professional photographers.

As for AF-C and AI servo, it means that you will always focus when you press the shutter for half a minute. Note that the camera will not give a hint that the focus is successful, and it is very likely that the focus will shift in the next moment. This focusing method is very useful when shooting dynamic things, such as animals and racing cars. Because single focus takes too much time to change the focus, I like to use AF-C or AI servo when shooting racing cars and animals.

As for AF-A or AI focusing, it is actually a combination of single focus and continuous focus, but it should be noted that the camera will change the focusing mode at any time according to the situation. This meeting is difficult to adjust. I suggest that you can choose the above two methods, and it is better to use AF-S (single shot) or AF-C(AI servo) in different situations.

8.tripod

A tripod is very important for photography, because it is the most effective tool to keep the picture clear, and it is not easy to find a suitable platform to put the camera and have a good composition, so a tripod will be more suitable. If you want to shoot the scenery such as car tracks and light tracks at night and still keep them clear, you need a tripod.

Now some cameras support high sensitivity, but in the end, high sensitivity will bring noise, so I suggest you bring more tripods, and don't be afraid of hard work, which will give you unexpected results. At the same time, remember to lower the aperture, lower ISO, turn off anti-shake to prevent the anti-shake part from moving and blurring the image, so that your photos will naturally become sharp.

Heavy. The tripod has strong unloading ability and will be more stable; Carbon fiber, which has become more and more popular in recent years, can also have good support, but the price will be more expensive. If the tripod shaft has a hook, you can hang the camera bag and other personal belongings, or even unload the force to reduce the vibration of taking pictures.

9. Wired release or 2-second selfie countdown

Continuing the secret of using a tripod just now, in addition to the tripod, it is best to bring an extra cable to avoid blurring the photos caused by touching the camera with both hands. Moreover, the cable player supports the B shutter, which is no problem for pictures that need long exposure. In addition to cable release, many novices will switch to a 2-second selfie countdown in recent years. First, adjust the aperture shutter ISO and other settings in the camera, and then use the self-timer function to shoot, so as to avoid touching the camera and shaking the photo at the moment of shooting. However, the self-timer countdown does not support the B shutter. I suggest you buy a wired release after the experience.

There are all kinds of cable releases on the market. Generally, you can choose wired cameras, and some with or without screens. You can even take a selfie for 2 seconds on the shutter line, which can "hold the camera steady" and ensure sharp photos.

10. Pre-lifting of reflector

If you want to get a clear image after a long exposure, you can use the "mirror lock" function. When the shutter is pressed for the first time, the camera will only raise the reflector and will not shoot. It won't shoot until the shutter is pressed again. This method is helpful to prevent the camera from raising the reflector when opening the shutter for exposure, which makes the camera shake and make the photo blurred. However, it should be noted that after the reflector rises, the viewfinder can't see the scenery, so before pressing the shutter for the first time, the picture has been constructed and all the settings have been done.

Beginners often ignore this function, but it is as important as using a tripod. Because the vibration of the reflector during shooting is enough to affect the imaging of the photo. Because the mirror pre-lift function of each camera is different, the high-order camera will be on the top control ring; The main camera may be stored in the menu, so be sure to know its setting position before shooting. Based on the above skills, the clarity of novice photography is by no means worse than that of professional photographers!