What is the biggest disadvantage of zoom lenses?

Disadvantages of zoom lenses:

Large size, heavy weight, complex structure, many lens groups and high manufacturing costs, low-end imaging is poor, high-end ones are expensive, and maintenance is inconvenient .

The biggest disadvantage is that the aperture is small and the zoom is unstable, thus affecting the image quality. This may be its biggest shortcoming. However, the zoom lens is still very good, and its so-called shortcomings can be ignored. If it is heavy, it may be a telephoto zoom lens, such as Canon's 100400, Nikon's 80400 and 200500, etc. The most common 702002.8 is not light either. Because the structure is more complex, the functions are diverse, and there are many natural materials, the weight will increase accordingly.

However, many zoom lenses are very lightweight, such as the 1635, and are very convenient to carry. In fact, the image quality of zoom lenses is very beautiful. For example, one of the large three-dimensional lenses that everyone often uses: the classic zoom lens 70-200f2.8. This lens is the lens with the best reputation, whether it is Canon or Nikon, manufacturers and merchants They carefully crafted and recommended this lens, which has become the best-selling lens. There are almost no shortcomings, but there are many advantages. It is convenient for shooting. The focal length can be long or short. It can be used flexibly to shoot portraits and landscapes.

What is the biggest disadvantage of zoom lenses?

The biggest disadvantage of a zoom lens is - image quality!

An old Chinese saying goes: Whatever you gain, you must lose!

Zoom lenses have advantages such as convenient composition and the ability to capture the world with one lens, but they must make sacrifices in other aspects. The biggest sacrifice is image quality, because zoom lenses rely on the movement of the lens group to change the focal length. , and the increase in lens groups will have an impact on the refraction and diffraction of light. Even high-end optical glass will have a certain impact, large or small, which may reduce the quality of the photo.

(Shooting at 80-400)

The greater the zoom ratio of the zoom lens, the greater the impact on the photo quality. For example, the zoom ratio of large ternary lenses is within three times, which is also to ensure the quality of photos. However, the zoom ratio of small ternary lenses 24-105 exceeds three times, and the image quality is significantly reduced.

(shot on 14-24)

The reason why a large three-dimensional lens with a zoom ratio of less than three times is a large three-dimensional lens is not only the material but also the control of the zoom ratio. Not only can there be zoom, but the image quality can be guaranteed to a greater extent.

(50 fixed shooting)

There is a saying that "there are no underdogs with fixed focus", which means that the image quality of an ordinary fixed focus lens will not be inferior to that of a big triple lens , the reason is that fixed focus lenses don’t have as many glass pieces as zoom lenses!

As for the other aspects of zoom lenses, such as the high price and heavy weight, these can all be overcome artificially. The high price depends on personal budget, and you get what you pay for; if you are big and heavy, a real photographer All the requirements are that you are in good health and can carry it, haha.

I am the South of the South, welcome to follow me.

What is the biggest disadvantage of zoom lenses? It took me a while to figure it out. The biggest disadvantage of zoom lenses is that cheap ones have poor image quality, and good ones are too expensive. For example, Canon’s Love Rabbit lens has good image quality, comparable to fixed focus lenses. Lens, but the price is more than 10,000! The price gap is too big compared to the 50-1.8 fixed-focus lens that costs several hundred yuan, and the image quality is only a little better than the 50-1.8!

As the saying goes, "Zooming relies on hand, fixed focus relies on walking", which means that zoom lenses can adjust the focal length, while fixed focus lenses can only adjust the distance from the subject by walking.

We all know that the two most important indicators for a lens are aperture and focal length. If divided according to the focal length of the lens, it can be divided into zoom lens and fixed focus lens. Generally speaking, the image quality of fixed-focus lenses is better than that of fixed-focus lenses, so most people will choose to buy fixed-focus lenses. So are zoom lenses really that useless? Today Xiaomeng will introduce to you an alternative among zoom lenses, a large zoom lens with mixed reviews. Many people like it very much, and some people will not buy it at all.

What is a large zoom lens? A zoom lens with a relatively wide range of changing focal lengths. It can range from wide angle, to medium focal length, to telephoto, and even to super telephoto. It can be said that the focal range covers a very wide range, and it is also known as the lens that “one lens covers the world”. The common ones are 18-200mm, 18-300mm, and 18-400mm, and the full-frame ones are 28-300mm.

Large zoom lenses have four advantages:

1. There are many subjects that can be photographed, because as mentioned just now, the zoom range is wide. Then use its wide angle to capture landscapes, mid-focus portraits, and telephoto to capture flying birds. It can do all of these.

2. Portable, less lens required. The portability mentioned here does not refer to the weight of the lens itself. You must know that the lens itself is actually relatively long and heavy. But when you bring it, you can bring less other lenses, which just reduces your burden. 3. Save money and use one mirror for multiple purposes. In addition to not having to carry so many lenses when going out, the most fundamental thing is that you can buy fewer lenses. Of course, the premise is that your requirements are not high.

4. The appearance is very "high-end".

Because the zoom ratio is relatively large, the materials used are relatively better than those of kits and "dog heads". A layman would think it is a very high-end lens, which satisfies the vanity of some people to a certain extent.

The shortcomings of large zoom lenses are also very prominent and obvious. I can roughly summarize it into the following four points:

1. Poor image quality and low resolution. There is no doubt that this is definitely worse than a fixed focus lens, and also worse than a constant aperture zoom lens. It can only be said that it is barely the same as 18-55 pulleys, or slightly better.

2. Small aperture. If you like to use a large aperture lens, then choose a fixed focus lens or a constant F2.8 variable lens. 3. The lens quality is poor. This mainly refers to the distortion, vignetting and possible dispersion purple fringing problems at the wide-angle end or telephoto end.

4. Poor workmanship, large size and heavy weight. This type of large zoom lens is actually very impressive in appearance, but its workmanship is not particularly good. In addition, the volume is relatively large and the weight is not light.

How should we choose when faced with a large zoom lens? Here are three types of people recommended to buy:

1. Newbies who save money. Using the least money to get the most focal lengths can be said to be very cost-effective. In order to save money, you can even consider buying a large zoom lens from a subsidiary factory.

2. Don’t care about picture quality. If you have little demand for image quality, or the image quality of zoom can satisfy you, then a large zoom lens is more suitable for you.

3. Pay attention to portable party. If you often travel, or are an elderly person, and you focus more on portability of your camera, you can consider a large zoom lens. After all, you can buy and carry fewer lenses. Of course, there are other more portable ones. solution.

As for photography, just be happy. The same goes for lenses, just choose what you need! Although many people will laugh at you after buying it, don’t worry! Let the photos speak for themselves, not the equipment.

Compromise.

In order to satisfy the user's zoom-in and zoom-out viewfinding methods, zoom lenses take into account factors such as selling price, weight and image quality, and adopt many compromise methods to achieve a balance between the various indicators of the lens. Make it a simple item to facilitate most people's hobbies and habits.

However, there are pros and cons. This approach makes the various indicators of the zoom lens unable to achieve the ultimate. One of the biggest features of SLR cameras is the replacement of lenses. In order to meet the shooting needs, you can replace the optical lenses that are unique in certain aspects. Various lenses for landscape, portrait, macro and sports are matched with the same camera through the interface, and each takes its own responsibility, making the photos more enjoyable.

When the viewfinder is simplified and the camera is digitalized, it is closer to ordinary people, more convenient and flexible. But the feeling of pursuing the ultimate is much less. The joy of photography has also changed. Simple equipment allows people to stay down and enjoy the process and the impact of good photos.

Hello, I am happy to answer your question. Zoom lens is a lens that most photography enthusiasts like to use. It can cover different focal length ranges, such as the common 17-85mm, 24-70mm, 70-200mm, etc. Each brand will have numerous zoom lens.

The biggest advantage of a zoom lens is convenience. A zoom lens covers the focal length range of multiple fixed-focus lenses, and the focal length can be changed anytime and anywhere without changing the lens

The current zoom heads of general brands can fully adapt to general needs. The problem can be solved without investing too much money. Zoom lenses also have their shortcomings. Generally speaking, the image quality of a zoom lens is not as good as that of a fixed-focus lens; the image quality of a zoom lens with a large focal length span is not as good as that of a closer focal length. For example, among zoom lenses of the same brand and product level, the image quality of the 18 200 mm lens is not as good as that of the 17 70 mm or 70 200 mm lens; compared with a wide-angle zoom lens with the same focal length, the image distortion is worse than that of a fixed-focus lens.

And in lightweight digital cameras, the product specifications are generally expressed in this way, usually three times the optical zoom, of course, it can be higher. These are specific issues to be dealt with on a case-by-case basis.

Large in size, heavy in weight, and inconvenient to carry. Professionals are okay, but travelers, especially long-distance travelers, don’t need them if they want to take souvenir photos. They are not easy to keep because they are large and easy to get bumped. These are precision instruments and will become unusable if they are damaged. The advantage is that the zoom block makes it easy to grab the shot.

The biggest impact is on image quality.

Heavy!