Ask a professional, what's wrong with taking pictures with Canon telephoto camera?

1, shutter speed is too low: camera shake caused by hand holding, or moving people and objects, resulting in unclear photos, which is generally reflected in motion blur with heavy edges.

Solution: increase the shutter speed and shoot with a tripod.

Tips: When shooting in hand, the shutter speed should not be lower than the reciprocal of the focal length used at that time. For shooting with a focal length of 200mm, the shutter speed should be at least 1/200 seconds, which is the so-called "safety shutter". In fact, the "safety shutter" is not static, such as shooting still life, with a stand, tripod or good light. When shooting moving objects, the shutter speed is higher.

2. Out-of-focus: the scene light is too dark and too bright, and the subject has no contrast (such as a monochrome wall), so the camera can't focus correctly, which leads to the subject's out-of-focus blur, which is generally reflected in Gaussian blur;

Solution: Select the subject or the junction of light and shade and color on the same plane to focus. In the process of focusing, you can judge whether the focus is accurate by looking at the viewfinder or LCD screen. Don't blindly believe in the focus tone. If the camera supports manual focusing, it can be adjusted manually.

Tips: Baidu "depth of field", master this concept.

3. The camera is out of focus: Mechanical failure or firmware defect inside the camera may lead to out of focus. In this case, the photo effect is basically the same as out of focus, except that all the photos in a focal segment or a full focal segment are blurred;

Solution: You can use the out-of-focus test card for testing. Once out of focus is determined, you can find after-sales adjustment or maintenance.

Tip: A tripod is required for defocusing, and each focal segment and aperture should be tested.

4. The overall imaging quality of the camera: the photo effect is not sharp enough, and there are few details or smear marks. At present, the imaging quality of most consumer telephoto card machines is not very high, especially the wide-angle end and telephoto end, which is caused by many factors such as sensor size and type, pixel number, optical structure and lens material, noise reduction algorithm and so on. Generally speaking, photos taken in good light can be used for network sharing or making small-size photos.

Solution: Try to shoot under the condition of good light and the best aperture and focal length of the camera, and try to shoot the subject in the center of the picture.

Tips: The best aperture of an integrated card machine cannot be measured by the usual concept. The maximum aperture of some cameras is the optimal aperture, while the optimal focal length of most cameras is from the standard focal length to the medium focal length. You need to study by yourself.