How can I focus clearly when taking pictures?

Photography Xiaobai will encounter the problem of losing focus when taking pictures. I feel that such an advanced SLR camera can't focus. What's wrong with the camera? In fact, we must first understand that this is not a problem with the camera, but because we don't understand the lens and camera functions. For a photographer, everything is as simple as possible, so today I won't talk about complicated focusing principles, just talk to photographers about how to take pictures with clear focus. Generally speaking, there are five reasons why the photos are not clear and the focus is not allowed. The following is the explanation of the little whites.

First, the lens is too close to the subject.

Sometimes we shoot small objects at close range, but we find that we can't focus because every lens has it. Nearest focal length? But the closest focal length of each lens is different. Wide-angle lenses and macro lenses can be close in focus recently, while telephoto lenses are far away. Back to what we said, what if the little green cat is too close to the lens and smaller than the lens you use? Nearest focal length? That can't be focused anyway. The correct way is to pull the distance between the big and small green cats and the camera. Let's use a set of photos to get an intuitive understanding.

The camera is too close to the object and smaller than the lens? Nearest focal length? So we can't focus normally, so we need to narrow the shooting distance.

When the camera zooms out, we can focus on the little green cat normally. The following is a sample shot with Sony NEX-6. You can click on the big picture to verify whether the photo is clear.

Sony NEX-6 and E 16-50 pullovers.

Canon EF 24- 105L f4 IS lens

Every camera lens has its closest distance, like this Canon lens, its closest distance is 0.7m, for example, a micro single camera lens, its closest distance range can be known in official website.

How to shoot pure white objects and dark environments?

When shooting a pure white object, you will find that you can't focus, because the object is too smooth and has no pattern and texture, so the camera's focusing function can't work normally, and the picture will always be in a blurred state. So when taking pictures, I should try to find places with certain patterns or textures on the surface of objects, so that the camera can have a reference point to focus on taking pictures.

Second, pure white objects must not be in focus.

A pure white object must be out of focus.

Choose a patterned position to complete the focus.

When shooting pure white objects, the camera can't focus and can only blur.

Choose a place with a pattern to complete the correct focus.

Third, how to shoot in a dark environment

Many times, we will take our cameras on the road at night, but we always lose focus in the dark. Should I turn on the camera at this time? Focus assist light? This helps us focus on shooting. Let's use two videos to learn more about this shooting method.

It is easy to focus in bright light. Of course, after turning off the lights, the environment becomes dark and the camera is not easy to focus.

So we need to turn on the focus assist light and use this light to illuminate the shooting position. However, the brightness of the focusing auxiliary lamp of a general camera is limited, and the irradiation distance will not be too far.

Learn to manually focus freely and know the lens AF/MF.

Fourth, learn to choose free focus manually.

Seeing the following set of photos, have photographers ever had such an experience: why can't they focus when they clearly want to shoot the pink kitten behind them? Actually, it's very simple. Just choose it manually when shooting? Free focus? You can easily shoot the feeling you want.

The above photo was taken in autofocus mode, and autofocus will give priority to the nearest object for focusing. Every day the camera has the function of manual free focusing, but the name will be different. Take Sony NEX-6 as an example. If you want to shoot a pink kitten, you have to choose manually? Free? Focus function when shooting.

Through the above methods, we can shoot what we want to shoot? Pink cat? As onomatopoeia

Learn to manually select a free-focus video.

Five, know the automatic focus and manual focus of the lens.

In fact, embarrassing things will happen when focusing. There will be AF and MF keys on the lens of SLR cameras. Sometimes we inadvertently touch the buttons on MF, but we still don't know. If we knew these two buttons, there would be no problem. AF is our usual autofocus, and the camera can control the focus of the lens when shooting, making it easy for photographers to take clear photos. The MF key is manual focusing, so we can focus manually when the autofocus is wrong.

Lens AF/MF key

Of course, for friends who have micro-single, most of the lenses of micro-single don't have AF/MF keys, so they need to be manually adjusted by the camera. The method is as follows.

Auto focus function

Adjust MF manual focus

The five reasons I mentioned above are the main problems that plague our poor focus and unclear photos. If photographers have encountered these things, I believe the answer can be found in this issue of Xiaobaixi photography. Taking clear photos is only the first step in photography. Saying goodbye to the professional exposure function of the automatic filing agency can make our photography technology stronger.