China Naming Network - Eight-character query< - How does Canon 5D 24-70 take highly blurred and clear model photos?

How does Canon 5D 24-70 take highly blurred and clear model photos?

Keywords: controlling depth of field.

Depth of field means that the scene looks clear in this range.

Generally speaking, the range of depth of field is an area with the focus as the center and the same distance from front to back.

So take the photo you posted as an example. If you open the aperture of 2.8, the depth of field is 50cm, which is 25cm before and after focusing. The model stands sideways, her face turns to you, and you focus on the model's eyes. Because the face of the model is not on the central axis of the body, the distance from the eyes to the front shoulder arm is 10cm, and the distance from the eyes to the back arm is 30cm, so the result is that the front arm is clear and the back arm is blurred within the depth of field.

Although the depth of field is 50cm and the shoulder width of the model is 40cm, it is reasonable within the depth of field, but because of your improper focus selection, it is "partially clear".

Obviously, the solution is to manually adjust the focus so that the whole body of the model is within the depth of field.

As far as my feeling is concerned, taking this 50-70 focal length photo is about 7 meters away from the model, the aperture is opened to 2.8, and the depth of field should be about1m. As long as it is properly controlled, it is completely sufficient.

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