What causes the photos to be blurred?

Although I think sharpness is a post-processing concept, to be a better photographer, you need to learn how to take sharp photos. The key to capturing these sharp photos is to understand all the defects that may cause the photos to blur. Once you know all the ways to make mistakes, the only difference between you and sharpness is hand-eye coordination.

1. Back focus

Back focus is the bane of almost every photographer. This happens when you think you are the main theme of autofocus, but the camera misreads the situation and focuses on the content behind it, thus destroying the image. This mainly happens when the focus is near the edge between the subject and the background.

The only way to solve this problem is to know what may happen. If shooting near the edge, please be more careful, or focus on a safer area before re-composing. Keep an eye on whether you think the focus is accurate.

2. When shooting a mobile phone, the shutter speed is too slow.

According to experience, your shutter speed must always be 1, divided by the focal length of the lens to offset the camera shake. So if you have a wider-angle lens, say 30mm, you need a slower shutter speed 1/30 seconds to ensure clarity. If you have a telephoto lens, say 200mm, this hint is even more important, because you need 1/200 seconds to offset the hand shake.

Photographers who shoot in aperture priority mode are often troubled by this problem without paying attention to the shutter speed, because such shutter speed can easily fall below the acceptable number.

Remember, if you have a crop or a miniature 4/

3rds sensor, you need to calculate your Quan Huafu equivalent focal length to calculate the required minimum shutter speed. For example, if the zoom ratio of your sensor is 1.5 times and you use a 200mm lens, the minimum shutter speed required is 200mm.

X 1.5 = 300 or 1/300 seconds.

3. The shutter speed is too slow to freeze the action.

To freeze the action, you need to use a faster shutter speed. The number I use is 1/50 second walker. Running and sports can be between 1/500 and11000, depending on the speed, but it all depends on the moving speed of the subject. When shooting moving objects (especially when shooting in aperture priority mode), be sure to pay close attention to your shutter speed.

4. Don't focus on your eyes in portrait photography

If you are shooting someone's face, especially in shallow depth of field and close range, the focus needs to be on the subject's eyes (unless you decide otherwise for creative reasons).

5. Don't raise your ISO high enough.

Without trying to shoot shallow depth of field, it is usually a very good strategy to improve ISO, which can even reach 1600, 3200 or 6400 depending on the camera and light. Improving ISO can provide faster shutter speed to offset the vibration and freeze of hand-held camera, and you can get greater depth of field with smaller aperture. Adding texture/noise is usually worth increasing the clarity of the scene.

6. I didn't stop completely to take pictures

Look at what people do when they travel. The environment is too exciting. If you want to take pictures, you must stop. Please wait a moment before taking pictures. If you take pictures in motion, it will be slightly blurred unless you use a very fast shutter speed.

7. Clean the stains on the lens.

Stains on the lens will reduce the clarity and ruin some photos. Carry a lens cloth with you, or clean it with a thin and soft T-shirt.

8. lose focus in the dark

The autofocus function of cameras (especially entry-level cameras) will be significantly reduced in dark places. Please pay more attention to the position where the camera locks the focus and try to find white, shiny or contrasting objects to lock the focus. If all else fails, please focus manually.

A lens with a large aperture (e.g. 50 mm f/

1.8) will be helpful, or you can use the most central focus in the camera. This is an intersection type, so it is more accurate, and focusing is often better in low illumination.

9. tripod error

When using a tripod, be sure not to touch it when taking pictures. Even if you hold it steady, it will cause confusion. Please use the remote shutter button or set the camera to a 2-second delay before taking pictures.

Please pay special attention to your tripod when shooting in windy days. The wind can also shake the camera and add some blur. To solve this problem, try to take photos in two gusts, and even consider improving your ISO to make your shutter speed faster. It is much easier to expose 10 second between gusts than to expose for 30 seconds.

Finally, when shooting on a tripod, be sure to turn off the image stabilizer. This may have nothing to do with some newer cameras, but it is always a good habit. When the camera is completely stationary, the stabilization system can cause less vibration to the camera.

conclusion

If you follow these nine suggestions, you should be able to avoid blurred photos better.