Is the aperture of m43 lens equivalent to that of 35mm Quan Huafu lens?

The magnification effect is always the same, but under the same aperture value, a small frame can obtain a deeper depth of field;

The reason is that M43 has a smaller lens diameter than 135 camera because of its small frame. Under the condition of constant equivalent focal length, the beam imaged by M43 camera is narrower, making the maximum far-axis light angle smaller than Quan Huafu, which means that the diffusion circle on the image sensor (the acceptable size of the image joint is equivalent to a magnifying glass facing the sun when the image is clearly imaged, and the larger the lower focus, the larger the spot. That is to say, because the equivalent focal length is always the same, the field of view shot at the same distance is the same, so the depth of field of the same object in the M43 photo is larger, but the relative depth of field is shallower in the 35mm frame.

In fact, this is also very understandable. For example, some people who like macro photography would rather buy apc frames than full-frame machines, because defective machines can obtain greater depth of field, which is convenient for macro photography to obtain a wider clear range.