How to take a photo with a particularly blurred background with a maximum aperture of 3.5?

1, accurate focusing: The focusing of digital cameras is mostly done automatically by the camera. If you use manual focusing, just adjust the focus to the position of the subject. If the distance between the subject and the background is far, the focus of the subject will be inaccurate. Therefore, when shooting with autofocus, we don't need intelligent focusing as much as possible, but use central focusing, aim the focusing frame at the subject and press the shutter half (focus lock) before shooting the scene to ensure the clarity of the subject.

2. Appropriate exposure: overexposure will lose the details and colors of the high-light part (bright part) of the photo, while underexposure will lose the details and colors of the low-light part (dark part) of the photo. Only accurate exposure can truly restore the details and colors of the subject.

Some cameras provide manual exposure adjustment mode, which can adjust the exposure according to the light receiving condition of the subject (regardless of the background exposure). When using automatic exposure, try not to use evaluation metering, because the camera determines the exposure according to the light intensity of the whole picture at this time. If the background is bright, the exposure of the subject will inevitably be insufficient. This is also the reason why some friends' faces will be black when they take portraits. Therefore, central key metering should be used. If the background light is too bright, spot metering should be used to ensure proper exposure of the subject.

3. Set the correct white balance: Whether the white balance is correct is related to whether the color of the subject can be correctly restored. In general, automatic white balance can be used, and manual setting must be used in special light.

4. Treatment of background: A messy background will weaken the expressive force of the subject, while a good background can set off the subject and increase the visual impact.

The larger the aperture, the longer the focal length, the closer the camera is to the subject and the farther the subject is from the background, the better the blur effect will be.