The larger the aperture, the more blurred the background (the difference of lens aperture size)

Aperture is one of the important factors in photography. Aperture is a device to adjust the amount of light entering a camera or lens. The adjustment method is to enlarge or reduce the size of the circular hole through the aperture blade.

The aperture value is expressed by the number size after f:, such as f: 1.8 and f: 3.6. The larger the number, the smaller the aperture. The smaller the number, the larger the aperture. The aperture size has a great influence on the result of taking pictures. The difference of aperture size is as follows:

The larger the aperture, the smaller the depth of field, and the smaller the range of clear imaging.

The larger the aperture, the more blurred the background.

Within a certain range, the smaller the aperture, the clearer the image.

Each type of lens has its own optimal aperture, and the image is clearest within a certain aperture range. This optimal aperture is generally between F5.6-F9 and F9.

In the case of insufficient illumination, a large aperture should be used to increase the amount of light entering to avoid ISO exceeding the standard.

When shooting moving objects, we should increase the aperture to get a faster shutter speed and avoid false photos.

When it is necessary to highlight the subject and blur the background, a large aperture can blur the background.

Use a small aperture when you need stars.

When taking photos of dozens of people and hundreds of people, in order to make the people in the middle and edge clear and the people in the front and rear rows clear, we should use a small aperture, which is about F 1 1-F 13, but it should not be too small. Too small will reduce the resolution of the photos, and may also cause ISO to increase or shutter speed to be too slow.

Sometimes you need a slow shutter speed, and then you need a small aperture.

Wind photography generally requires small aperture.

Shooting urban architecture photography generally requires a small aperture.

Flower photography generally requires a large aperture.

When taking portrait photography, a large aperture is needed in many cases.

Sports photography and stage photography generally require a large aperture.

Cultural relics photography generally requires a small aperture.

When shooting with telephoto, you generally don't need a particularly large aperture.

When shooting at a wide angle, a particularly small aperture is generally not needed.

When shooting with large aperture, the image is easy to change color.

When shooting with a large aperture, the image quality at the edge will be degraded.

When shooting with large aperture, the phenomenon of dark angle will be more obvious.

Reduce the aperture to f/ 1 1-f/ 16. Some cameras can reduce moire fringes.

In strong outdoor light, the entrance camera may not use too large an aperture. Unless a dimmer is installed, it will be overexposed, because the maximum shutter speed of the entrance camera is only 4000th of a second.

Generally speaking, lenses with large apertures are much more expensive.

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