Excuse me, photographers, is the lens of Longteng 18-400 easy to use?

Very rich focal length, suitable for perfect composition and perfect snapshot. Slightly insufficient is that sharpness, colo

Excuse me, photographers, is the lens of Longteng 18-400 easy to use?

Very rich focal length, suitable for perfect composition and perfect snapshot. Slightly insufficient is that sharpness, color and transparency have all declined. Because it is a floating aperture, it is inconvenient to use.

For photographers, the biggest advantage of large zoom ratio lens is that it is convenient to shoot. You can shoot a big scene with a wide-angle end and a close-up with a telephoto end.

A lens with a large zoom ratio is useful in the following aspects: First, shooting in sunny days, sunny days, high ambient brightness, and shooting with a smaller aperture. Second, it is better to take still photos, and it is easy to take dynamic photos with telephoto lenses. Third, it is good to learn photography, including all the focal segments used by professional photographers.

Using this lens can prevent hand shaking, especially at the telephoto end without high shutter speed, the protagonist is easy to blur.

A tripod is needed for cloudy shooting. Because this lens has a small aperture and a small amount of light, the shutter speed will be very low when taking pictures on cloudy days.

If you are a student and not a professional photographer, this shot is still worth recommending.

From this point of view, this Longteng 18-400 lens can be said to be very useful.

Just look at the activity scene shot by this lens.

Why does this lens work?

The focal length is complete and convenient, and the picture quality is acceptable. From 18-55 to 18- 135 to 18-200, the more focal lengths, the more convenient.

18-200 covers wide angle, medium focus and telephoto.

You can shoot it near or far away.

So 18-200 is called "a mirror that walks the world".

In other words, if you use a Canon half-frame SLR camera, such as 200D//, 80D, 90D, and take photos and travel every day, such a 18-200 is enough.

For fast-paced activities, such as sports meetings, conferences, performances and weddings, there are many fleeting wonderful scenes, so it is definitely too late to change the lens back and forth.

There are several J-lens cameras with different focal lengths in Quan Huafu, which are made by professionals.

Generally, shooting requires such a large zoom covering all focal lengths, which is also very easy to use.

In the eyes of many photographers, 18mm starts from a wide angle. Of course, the longer the focal length, the better.

Canon released an rf60-600mm lens, which should be the dream of many people.

An inch long and an inch strong.

Especially on the basis that shooting is more important than shooting well, a longer focal length is very important.

Some people say: not good enough, but you are not close enough.

Pat a person. You can punch a person in the face and pat a tiger. Dare you pat the tiger's ass?

Just to shoot a meeting, would you stand in front of the podium, block everyone behind you and take a close-up of the leader's face?

To do a performance, you have to jump on the stage and frame with the actors?

However, the lens has a long focal length, which is not only bulky, but also expensive and difficult to guarantee the image quality.

A telephoto fixed focus lens, such as 200 fixed focus, 300 fixed focus and 600 fixed focus. There is nothing to say about the picture quality. Birds at a distance of 100 meters can count their hair.

The biggest disadvantage of telephoto lens is that it is almost impossible to run around with it. It's too expensive if the aperture is not too small.

Master, those guns started at100000. And you can only shoot from a distance, and you can't see anything at close range.

This kind of professional lens is only suitable for shooting athletes outside the stadium, or hiding in the distance to shoot birds.

High quality ternary 16-35, 24-70, 70-200. In principle, the zoom factor shall not exceed 4 times.

The basic common sense of lens is that the greater the zoom ratio, the worse the imaging quality.

Half-frame lens, the quality requirement is not high, and the zoom ratio can be appropriately larger.

This is convenient for wide angle, medium focus and telephoto.

However, the larger the zoom ratio, the worse the image quality.

18- 135 is much better than 18-200.

The zoom ratio of 18-400 is staggered by 22 times.

This is also a place where many people will have questions.

Can you still see the quality of the lens with such a large zoom ratio? There is no point in watching the promotional videos of the manufacturers.

It is not impossible that the economic fuel consumption of mid-level cars can be shown to 3.5 liters per 100 kilometers. The achievable conditions are too harsh and have no practical value.

The lens is the same, and most people can't play the environmental conditions and photography level of the manufacturer's promotional film.

We can only look at the personal experience in actual use, which is closer to life and more convincing.

Half-frame lens, whose picture quality is better than others?

Compared with Quan Huafu lens?

Technical parameters need not be debated, right?

1000 yuan half-frame lens or 10000 Yolanda Hua Fu lens, which is better?

So there is no comparison, unscientific.

Half-frame lens can only be compared with half-frame lens with similar price, which is reasonable.

Don't compare it with 18-55mm of several hundred yuan. Many people say that this "dog head" is not as good as a mobile phone, and there is some truth.

In Canon's half-frame lens, the word of mouth is 18- 135. The equivalent focal length is 28.8-2 16mm, which is also equivalent to the focal lengths of two Quan Huafu lenses of 24-70 and 70-200. Therefore, the shooting needs of general occasions can be met, and most of the picture quality can also be satisfied.

I also want to be more convenient. I travel around the world with "18-200". With this long focal length, I feel much more convenient. I don't want to use 18- 135.

Is there anything more convenient?

That is, of course, the 22x zoom lens of this Longteng 18-400 "A Mirror Leads to the Universe".

For a half-frame lens, Canon's equivalent focal length coefficient is 1.6, and Nikon's is 1.5.

The focal length of 400mm is equivalent to 640 mm

On what occasions, the focal length of 640mm is not enough?

How is the picture quality?

When this lens is used on a half-frame SLR, the equivalent focal length is 28.8-640mm, the minimum length is 124mm, and the weight is 7 10g. It is not much different from the original Canon 18-200 in sense, but its performance is much better.

This lens also has 2.5-speed anti-shake compensation, and hand-held shooting improves the definition.

Recently, the focal length is 45cm, and such a long lens also has macro function. It is really good news to shoot flowers in grandpa's and Aunt Park's flower beds.

This Longteng 18-400 lens is not cheap in a half-frame lens, and the price of one lens is 3999 yuan.

But after using it, you can really feel the value for money, and the picture quality is quite satisfactory.

Worth a penny and a price.

When I first entered this lens, I felt that the rotation damping was too large, as if the circle was not round. I suspect that I fell or have other problems. After consulting, I'm just like that. I'm not at ease.

After using it for a period of time, I know that the design of such damping sense is reasonable for such a long focal length. After focusing, the lens positioning will be more accurate, and the paste will not be easily shaken because the push-pull is too smooth.

Such an "expensive" half-frame lens, 7 10g, is not very light, and it is not suitable for an entry-level SLR like 850d or a toy like 200d for young people. It is stupid.

The best match is Canon's half-frame flagship machine EOS 90D, with 32.5 million pixels, 1 1 frame/second high-speed continuous shooting, face recognition, human eye focusing, and convenient focusing lever to ensure long focus.

Half-frame lens can't be used on Quan Huafu SLR, but it can be used on Quan Huafu SLR through adapter ring. With the help of Quan Huafu OMOS non-reflex system and powerful and advanced focusing system, it can be said that it is really easy to use, at least it has a better sense of high quality and fine image quality.

However, this half-frame lens Longteng 18-400 of "A Mirror Going to the Universe" was applied to Quan Huafu Canon rp through the adapter ring, and the system automatically recognized it, and the picture immediately became 1.6 times cropped. Moreover, halving the number of pixels is very unkind.

Canon rp is an entry-level machine in Quan Huafu. Using this half-frame lens is a bit top-heavy, but it is very easy to use. Although there is no anti-shake, the handheld screen is completely available. Since Canon rp is a 2600-pixel CMOS, half of it has more than10 million, and most of the pictures are enough.

However, when used on the 20-megapixel Canon r6, although the maneuverability and high sensitivity are much better than those of the Canon 90D, the pixel reduction is less than10 million, which is too low. It is best used in rp with high cost performance.

If you use a lens with more than 3,000 pixels on the 25,999-yuan 45-megapixel Canon r5, there are still 20 million pixels left.

But isn't that a little unprofessional?

Who would use it like this?

Never used it. This should be a mirror to travel around the world. Theoretically, the smaller the difference between the maximum focal length and the minimum focal length, the better the image quality and the higher the imaging quality.

Hello, photographers! Firstly, the lens filter of Longteng 18-400mm HLD is introduced, with a diameter of 72mm, which is larger than that of the old model 18-270mm, so that the luminous flux of the lens will be greater. However, the rear bayonet of the lens still adopts the design of metal material and sealing ring, which is very kind.

18-400mm HLD zoom ring occupies most of the lens, which is very wide and has a good zoom feel. The front end of the lens is the focus ring, but we found a problem. When the lens is autofocused, the focus ring will rotate with it, and your finger may touch it. Be careful when shooting.

Optical structure of 1. lens

The lens adopts the optical design of 1 1 group 16 lens. As can be seen from the figure, it has three LD low dispersion lenses, two GM glass cast aspheric lenses, and 1 composite aspheric surface. Among them, LD lens can effectively reduce the occurrence of color depth and improve sharpness, while aspheric lens mainly solves the problem of lens deformation.

2.MTF curve

According to official information, the imaging of this lens is quite satisfactory. The sharpness of 18mm end center is good, but the edge imaging drops greatly. The imaging at 400mm end is much better, and there is little difference between the center and the edge.

3. Lens glare test

For the lens, anti-glare is a very important performance. Anti-glare performance is directly related to the coating and optical design of the lens. If the glare is very serious, it can only show that the coating is unsuccessful. The author deliberately found a strong light environment to test and see how this lens actually performs:

18mm end

F3.5

F8.0

400 mm end

F6.3

F8.0

This lens has good anti-glare ability at both ends of 18mm and 400mm, especially at the end of 18mm, with almost no obvious spots. There will be less obvious halo at 400mm, and the overall performance is unexpected.

Lens purple edge test

The purple edge of the lens often appears in scenes with high light ratio or contrast, which will cause dispersion at the junction of light and dark parts in the photo. Purple edge is the most harmful phenomenon that affects the image quality. The appearance of purple edge is related to the optical structure of the lens. The author deliberately found a scene with a large light ratio to see how it performed.

The lens of Longteng 18-400 introduced above is still a good lens for photographers to recommend using SLR high-end cameras! Thank you!

Hello, I'm a photographer. As a professional photographer, I feel honored because I can tell you all the information I know. In view of the questions raised by the subject, the following are my views and sharing:

The advantage is that the zoom ability is very powerful. The disadvantage is that although the zoom factor is more than 22 times, it does not provide a wide-angle focal profile. In fact, scorching is not as practical as 16-300. As for the image quality, it is a common problem of large zoom lens, or its own characteristics, not to mention its shortcomings.

These are my views and sharing. I hope we can learn more knowledge and improve our ability. At the same time, I continue to learn and accumulate from the media platform every day.

Longteng does have some strength in large zoom lens. Longteng 18~400 has been used for four years. It is small in size, with anti-shake focusing, has a certain macro function, and its resolution and sharpness are better than those of other large zoom ratios. It is a very good backup lens for fixed focus lens. At present, it is generally one plane with two reservations+Longteng 18~400, which can almost cope with the shooting of people, scenery and flowers.

I have sold the well-behaved lens. I can shoot sunsets and birds and the moon nearby, and I barely passed. This is the sample and the real lens. The fuselage is Nikon D7500. If used in Quan Huafu, it must be set to DX.

65438+ sold at the end of February.

-Gorgeous dividing line-

I bought a Sigma 150-600C, and here are the samples and objects of 150-600, the fuselage, Nikon D750.

A lens with a zoom of more than three times will not be very good.

Photography is poor for a lifetime, and SLR destroys three generations. If you really want to pursue high-quality photos, I suggest buying more lenses with different focal lengths. For example, wide angle, medium focal length, telephoto, and if possible, start with some fixed focus. This kind of lens that travels all over the world is not so good.