If the aps-c format camera body picture is convenient, then go for the 18-200. One lens for the world?

The advantages are very simple. The focal length is wide and one lens covers the wide angle-the telephoto lens is basically not necessary when going out. Need to change the lens

The disadvantages are also obvious. The image quality of the large zoom ratio lens is average, especially at the telephoto end. The sharpness is very unsatisfactory. The floating aperture (of course, most lenses have floating apertures). The maximum aperture imaging sharpness is also poor. Obviously not as powerful as the best aperture (generally between f7-f11).

If used properly, you can produce beautiful pictures, but if you use it incorrectly, it can easily produce dull pictures, thus wasting the excellent performance of the SLR camera. Also, the overall performance is mediocre, such as focusing speed and accuracy, especially when the light is not good.

This kind of head can take pictures of everything, but the effect is not as good as a special lens?

There are also 18-135 lenses with the same positioning, and Sigma Tamron also has its own For the travel head 18-200 Tamron seems to have a very scary zoom ratio of 18-270.

Which lens is suitable depends on the subject you are shooting and has little to do with the camera. For portraits, it is best to use a fixed-focus lens with a medium focal length or a medium telephoto lens because the fixed-focus lens has a good image quality and a large aperture, and it is easier to control the camera for portraits. The problem of difficult composition with a fixed-focus head no longer exists.

For example, 50mm fixed focus, 85mm, 135mm. The larger the aperture, the more expensive the lens. The cheapest 50mm 1.8 only costs six or seven hundred yuan. Of course, sometimes 35mm fixed focus and 24mm fixed focus are also used, but they are relatively less

It is more convenient to use a wide-angle zoom when shooting landscapes. The wide-angle field of view allows you to take in more scenery. The wide-angle zoom makes it easier for you to compose pictures. Suitable for c-frame bodies are 10-22, 17-50, 18-55, 15-85, etc.

If you like to take pictures of flowers, birds, insects and fish, you can use a telephoto zoom head such as 55-250, 70-300, 70-200, etc. Etc.

One lens to conquer the world generally refers to Nikon or Canon's 18-200, or Tamron's 18-270 lens, ranging from wide angle to telephoto. It is convenient for traveling, and can be used for taking close-ups, scenery, and people.

Because when you go out, it is very inconvenient to carry a close-up lens and a long-range lens to take close-up and long-range shots. Carrying multiple lenses takes up both volume and weight.

One lens means that you only need to bring an 18-200 focal length lens with you when traveling.

The 3.18-200 focal length lens has a relatively wide focal length coverage, which can basically meet the needs of taking close-ups and long shots, and the imaging effect is also good.