What s so good about the fixed focal head? Advantages of prime lenses

I think the main benefits of fixed focus are as follows:

1. Due to the consideration of the overall performance of the lens, the zoom lens will be designed with some trade-offs, so there will generally be a focal length with the best performance, and the others will be slightly worse. However, the prime lens does not have this concern, so it can be designed in the best direction.

Second, the zoom head is more complex in design, so the manufacturing cost is also higher, a better zoom head is generally not cheap, relatively speaking, the cheaper ** can buy a fixed focus head in this section.

3. Since there is no need to consider the zoom factor, you can get a better lens effect with fewer lenses, and make a large-diameter lens, and the cost is lower than that of a zoom lens.

For example, Nikon and Canon both have a 50mm 1 8 prime lens, about seven or eight hundred, and the effect is very good.

Not all prime heads are more expensive than zoom, huh

The reason why the fixed focus is expensive is that the aperture of the fixed focus head is generally larger than the zoom, and the larger aperture means that larger lenses are needed, and larger lenses require higher costs

That's pretty much the reason

Of course, other special lenses are not included

The general lens of prime is fast and the image quality is clear.

Work. Process difficulty. Large aperture.

Introduction: Many photography enthusiasts are afraid of the trouble of changing lenses when they go out, so they all go around the world with one shot, and even the zoom lens feels that the variable area is too small, not to mention the prime lens, in fact, the prime lens also has advantages, so follow me to learn what the advantages of the prime lens are.

To add a little bit of English: a prime lens is a lens that has only one fixed focal length, and the other lens is a zoom lens, which has multiple adjustable focal lengths. Although zoom lenses are more convenient than prime lenses, many photographers end up choosing a prime lens as their main shooting partner, and here are the top 6 reasons why people love a defocused lens.

1.Affordable**

Generally speaking, prime lenses are cheaper than zoom lenses, compared to zoom lenses, a Prime Len uses fewer lens groups and a simpler structural design, generally speaking, the best prime lenses are only half of the zoom lenses**, especially the 50mm focal length, which is almost the cheapest focal length of each lens.

2.Minor distortion

Distortion is the biggest weakness of zoom lenses, almost all zoom lenses involving wide angles have obvious distortion problems, while fixed focal length lenses often rarely appear because they only need to correct and optimize the imaging of one focal length; It is also worth mentioning that rangefinder cameras have a natural advantage over DSLRs in terms of wide-angle distortion, such as ultra-wide-angle lenses such as 15mm, which are not even distorted at all.

3.Sharper imaging

The simple lens structure naturally results in sharper images, especially those with ASPH aspherical lenses, which provide extremely sharp in-focus imaging even at the maximum aperture.

4.Feminine bokeh

Under the same conditions**, a prime lens can provide a wider aperture than a zoom lens (in fact, the limit aperture of a zoom lens is, which means softer). Bokeh effect, in addition to this, prime lenses have more aperture blades, and a near-circular aperture will provide the most beautiful bokeh.

5.Adaptability in low-light environments

If you've never used a lens for rough cherry blossoms, you'll miss out on a lot of great opportunities to shoot in low-light environments – indoors, darkly lit and romantic cafes, and street ...... at nightHowever, it is not recommended to pursue the following apertures, this extremely large aperture lens will not do your work any benefit except that it is expensive and satisfies your vanity.

6.The prime lens makes you think

Using a prime lens is like dancing in a shackle, you have to put in a lot more effort: you need to think carefully about the way you compose your shot, you need to find the best angles and distances for your shot, and you need to start using the aperture to get just the right depth of field instead of indulging in shallow depth of field. A zoom lens is nice and convenient, but a prime lens will take your photography to a completely different level – thinking.

The focal length of the prime lens cannot be adjusted, and when the prime lens is focused, you can use the autofocus mode, the manual focus mode, or the full-time manual focus to adjust roughly and then focus accurately. A prime lens is a lens with only one fixed focal length, only one focal length and only one field of view. Fixed focal length lenses do not have a zoom function.

The design of the prime lens is much simpler than that of the zoom lens, but the general zoom lens will have an impact on the imaging during the zoom process, and the biggest advantage of the fixed focus lens for the zoom machine is that the focusing speed is fast and the imaging quality is stable. Many digital cameras with fixed-focus lenses capture clear and stable images of moving objects, with very accurate focusing, delicate images, very slight graininess, and accurate metering.

If a novice photographer wants to upgrade his lenses, he will be faced with endless options, and DSLRs have a large selection of lenses, including both prime and zoom lenses.

Let's take a look at the zoom lens first.

1.Zoom lenses allow photographers to choose different focal lengths, from wide-angle to telephoto;

2.A zoom lens allows the photographer to approach the subject without moving;

4.There is no need to change lenses, reducing the chance of dust entering the camera.

When they first entered the market, the zoom lenses were heavy, and the image quality was not comparable to that of prime lenses. With the improvement of the design level, the image quality of the zoom lens has been greatly improved, but the loss of image quality is still inevitable for the lens with a relatively large zoom.

Today's professional photographers typically have multiple prime lenses with large apertures, including wide-angle lenses (20-28mm), 50mm standard lenses, portrait lenses (80-105mm), and telephoto lenses (180-200mm) that can take close-ups or head and shoulder shots, or take sports and wildlife subjects.

Because there are some ** that can't be shot with a zoom lens:

1.Fixed focal length lenses have a wider aperture. The wide aperture can control the depth of field, and through the depth of field, the photographer can direct the viewer's gaze to the most important things on it.

In portrait photography, it is very important to separate the model from the background. If you notice an advertisement in a magazine, you can see a lot of this effect.

2.The added benefit of a wide aperture is that the sensitivity can be reduced to reduce noise.

3.Most prime lenses have a depth of field scale that makes it easy to read out the current depth of field range and focus distance. This is useful for shots that require tight depth of field.

4.The large aperture of the prime lens makes autofocus faster and more accurate. How many times does your zoom lens "pull the bellows" back and forth to find focus? Because their maximum aperture is not large enough to get enough light in.

5.At the same focal length, the prime lens is sharper and has a shorter minimum focusing distance.

Finally, zoom lenses will still have a place, as the image quality improves, one lens can meet most shooting needs, for travel photography, wedding photography and some portrait photography zoom lenses have their place, but keep the prime lens in the camera bag, you will be able to use them when you need the best picture.

How to choose between prime and zoom lenses? 2 minutes to tell you the answer.