Is it possible to achieve a full frame effect with a wide angle lens?

The size of the difference between the full frame and the c amplitude in the imaging area··· To compare the gap between the two, you can fix some parameters to compare... For example, fixed shooting distance, lens, **, etc., then the C picture is equal to the middle part of the full picture, in short, the C angle of view becomes smaller... If you use a telephoto lens, then the C frame shoots something bigger, that is, the so-called earned focal length, in fact, this is completely fooling people, I use the full frame, the later part of the middle part is not cut out, of course, in the case of the full pixel density is equal to the C frame, but now the full pixel is generally greater than the C frame... Then the full-frame CMOS area is larger, assuming that the final picture is the same, then the full-frame is not equivalent to recording the same thing with a larger area, so that the picture quality is naturally better... And then there's the so-called full-width bokeh ability is better... In fact, it is still a truth, under the same focal length, the full-frame angle of view is larger, for example, if you want to take a close-up, use the same focal length and aperture with the C frame, the full frame can just be shot, according to the previous introduction, the C frame is the cropping in the middle of the whole frame, then when the C frame shoots, you have to step back a certain distance to fit what you want to shoot, we know that one of the elements that determine the depth of field is the distance between the camera and the subject, the closer the distance, the smaller the depth of field, the more obvious the bokeh effect, now the C frame uses the same focal length, but it takes a longer distance to shoot, So from the actual effect, the bokeh effect of the whole frame is better than that of the C frame... If you use the same shooting distance and different focal lengths of the lens, then the focal length used in the C frame must be smaller than that of the full frame (so that the angle of view can be larger), and according to the law that the longer the focal length, the smaller the depth of field, the better the bokeh effect of the full frame is obtained than the C frame.

The above is the actual difference between the full frame and the C frame due to the different imaging area, understand this and you will know the answer to your question... In addition, in fact, the lens has a certain imaging circle, such as the EF lens, the imaging circle is approximately equal to the area of the CMOS of the full-frame machine (CMOS is rectangular, and the imaging circle is circular), this lens is mounted on the C frame, and only the light in the middle of the imaging circle reaches the CMOS of the C frame, so it can only shoot the thing in the middle of the imaging circle, which is the so-called wide-angle loss. If the EF lens is mounted in medium format, then the ** will be dark all around, because the corresponding CMOS part is not receiving light. So we can find that with the same angle of view, in order to get a larger image circle, you must have a larger focal length, so the focal length is not the only factor that determines the angle of view, it is also related to the image circle you need.

For novices, it will seem that the C frame has lost the wide angle, but in fact, it is because the lens angle of view is represented by the focal length, and if the lens parameters are represented by the angle of view, this will not be the case.

I think the questioner's point is this, if the full-frame machine uses the wide-angle focal length effect achieved by using a 24mm lens, then the relative non-full-frame machine may need to use a 16mm ultra-wide-angle lens to achieve a focal length of 24mm, and so on, which is equivalent to exchanging a full-frame wide-angle for a full-frame mid-focus and a non-full-frame mid-focus for a full-frame telephoto.

The main thing is that the sense of perspective is different.

First, it can increase the spatial depth of the photographic image.

Second, the depth of field is long, which can ensure that the front and rear scenes of the subject can be clearly reproduced on the screen. Therefore, the vast majority of pocket-sized automatic cameras (commonly known as point-and-shoot cameras) in the current generation of hunger socks use 38-35 mm ordinary wide-angle lenses.

Third, the lens covers a large area and shoots a wide range of scenes.

copy: These are two unrelated concepts.

Full frame is for the size of traditional 35mm film. In the past, DSLR CCDs were smaller than 35mm film, and full-frame DSLR CCDs (or CMOS imaging elements) were the same size as 35mm film. The larger the CCD size, the higher the image quality.

While a wide-angle lens is a type of lens, taking a 35mm DSLR camera as an example, a wide-angle lens usually refers to a lens with a focal length between about 17 and 35 mm. The wide-angle lens has a short focal length, a wide angle of view, and a deep depth of field, which is more suitable for shooting larger scenes, such as architecture, landscapes and other subjects.

1.Generally, when considering the lens, the first choice is the original factory, because the original factory will have a precise calibration (its own bayonet) when it leaves the factory, and the focusing accuracy is much higher than that of the sub-factory. If you want to ** in the future, the original factory is much better than the deputy factory.

Besides, Nikon's 1024 effect is still okay. The focal length is also more convenient.

2.Sigma 1020, This lens is used by more people, Word of mouth is still okay, the disadvantage is that the image quality at the edge is more bad, If you think the original is expensive, choose this.

3.ATX116, the reputation is very good, the advantage is that the aperture is large, the sharpness is high, the disadvantage is that the dispersion is more powerful, this seems to be a common problem of Tokina, and the focal length is too narrow, sometimes it is not very convenient, in fact, there is another advantage, hehe, that is, Tokina's lens is too compatible with Nikon's machine, and the difference between the outside ** and the original factory is very small.

4 Sigma 816, this lens, alas. It's too wide, although the deformation can be controlled, but after all, it's too wide, basically the ** shape becomes more than 12mm to make me accept, hehe, maybe I'm too demanding. In addition, there is another one, that is, this lens cannot be filtered, which is more head-heavy, and more seriously, this lens is top-heavy, which means that if this lens accidentally lands, it must be the head on the ground, and the head cannot be equipped with a protective lens.

If you choose this, you can protect it. In addition, the aperture of this lens is too small and it is also a weakness, and it can only shoot outdoor sunlight films, or on the shelf, which is really not as convenient to use as the others.

1. Nikon 16-35F4. The optical quality is good, and it is not expensive.

2. Tuli. The aperture is wide, the quality is good, and the wide angle is wider.

Summary. As long as your lens is good enough and you don't care whether the body APC-C or the full-frame sensor is, it is true that a good lens does have certain advantages, but we have also seen that full-frame cameras have certain advantages when shooting with the same focal length.

As long as your lens is good enough, it doesn't matter whether the apc-c or full-frame sensor of the body is covered, it is true that a good lens does have certain advantages, but we also see that the full-frame camera shooting effect has certain advantages in the case of the same focal length.

The positioning of the full-frame camera is relatively higher than that of Tongzhi, the pixel density is lower, the high-sensitivity image quality is better, the half-frame machine is low, the cost performance is high, and the telephoto lens can steal the focal length, and the telephoto is more to roll the song, so, these two cameras are good ......Different needs are big rounds, different choices.