What is the performance of the Sigma 18 to 200 lenses? Please answer the question

Do you mean quality or imaging? The quality of this lens is no problem, and now it is anti-shake with a motor, and it can be used in models without a focus motor such as D40-D60-D3000-D3100.

It's certain that there is a gap between imaging and bullheads, but how big is the gap? The impact of the difference of less than 5% on our non-professional photographers can be said to be almost insignificant, and photography does not rely on the lens, but on the brain.

Sigma 18-200 takes into account both wide-angle and medium telephoto, I have one, I am very satisfied with the performance of this head, the cost performance is very high, the market price is currently about 2400 yuan.

1. The deputy factory head, compared with the original factory head, is slightly inferior in imaging quality, if it is only enough to take life photos and travel use.

2. Generally, the larger the zoom ratio, the worse the image quality of the head, and they are all low-end products.

3. The imaging of the Sigma head is generally slightly yellowish, commonly known as "Sigma yellow", which is troublesome in the later stage.

4. It is better to wear the head of the original factory, and there are many fewer problems such as coke, such as the recommendation of the deputy factory.

It doesn't feel good! I don't know what LZ wants to do with it??

The lens is good or bad, and the telephoto of the deputy head is not very good. To use a telephoto, it is best to buy the original constant aperture.

Picture quality aside, the cost performance is still higher than the original head.

But if you don't have enough budget and want a wide angle and want a telephoto, it's definitely the best choice. The wide-angle end can be used, and the telephoto end can be used to get a good depth of field effect, and if you use it well, no one will know what head you use if you don't say it in post-production.

In general, Sigma's fixed focus strength is better than zoom, and Tamron's individual types are better than Sigma's ......The economic public still prefers the configuration of the auxiliary factory, which is very good ......Those who pursue perfection have to have a good opportunity and a good ......FYII......

Using a Sigma 800mm prime lens requires some skill and experience, and here are some suggestions:

Use a tripod: Since the lens is relatively long, using a tripod can improve stability and reduce shaking.

Use the shutter release or remote control: Reduce jitter when the shutter is pressed manually.

Manual Focus: Manual focus allows you to adjust the focal length more precisely and shoot sharper**.

Use a high-speed shutter: Since the lens is long and susceptible to external environmental factors, using a high-speed shutter can reduce motion blur when shooting.

Pay attention to the light conditions: The 800mm lens is dark, so it is recommended to shoot in good light or use a higher sensitivity camera setting.

Shoot stable subjects: Due to the relatively long lens of clear orange jujubes, the requirements for the subject of shooting are relatively high, so it is recommended to shoot relatively stable subjects, such as animals or plants that are still in the water.

Practice: Shooting requires a certain amount of skill and experience, and more practice can improve your shooting skills and level.

1. Sigma 12-24mm lens will first be out of focus, but generally for wide-angle small aperture lenses is not a big problem, generally speaking, it is no problem not to use it indoors to shoot ultra-close small objects.

2. Secondly, the imaging around it will be a little loose, although the lens aperture is large, but the edge imaging is still a relatively large gap with the classic wide angle, and there is a relatively small problem that it integrates the lens hood, the first big fisheye, so the filter is difficult to add.

What are the disadvantages of this lens for the Sigma 12-24?

Hello dear, the Sigma 12-24 is a wide-angle zoom lens that is widely used in landscape photography and architectural photography. While there are some advantages to this lens, such as wide-angle shooting, high-quality images, good aperture and zoom range, etc., there are also some disadvantages. 1.

Distortion: Due to the ultra-wide-angle design of the Sigma 12-24, perspective distortion and distortion are prone to occur, especially in tightly composed scenes, such as buildings and bridges. 2.

Appearance: The Sigma 12-24 has a relatively large design, and with a protruding "nose bridge" at the front, it grows to more than 100 Effer, indicating that the negative is easily injured or the lens surface will be hit. 3.

Aperture: Due to the large aperture design at the front, the effective diameter calculation of the optical system is reduced, which makes the aperture darker and the intensity of the out-of-focus light is reduced, so it is not recommended to use the open aperture in dark environments. 4.

Weight: The Sigma 12-24 is a relatively heavy lens, which can be somewhat taxing on the user's experience for users who wear the camera. To sum up, the Sigma 12-24 is an excellent wide-angle zoom lens, but with some limitations in its design, it is also necessary to pay attention to overcoming some of its shortcomings during use.