Macro lens is a special lens used for macro photography, mainly used to shoot very subtle objects, such as flowers and insects. In order to focus correctly on very close subjects, macro lenses are usually designed to be stretched longer to keep the optical center as far away as possible from the photosensitive element. At the same time, the lens group design must also focus on Control of deformation and chromatic aberration at close range.

Most macro lenses have larger focal lengths than standard lenses and can be classified as telephoto lenses, but may not be as optically designed as normal telephoto lenses, so they are not fully suitable for general photography.

Magnification is one of the basic specifications of a macro lens, which is used to express the ratio of imaging to real size. When an object with a real size of 2 cm forms an image with a size of 1 cm on the focal plane, the magnification ratio at this time is 1: 2, or reduced to 0.5, usually a dedicated macro lens can achieve 1:1 magnification.

Macro lenses are usually prime lenses, so you can change the magnification when shooting by changing the distance between the photographer and the subject. Now there are also some lenses advertised as having macro capability. Such non-dedicated lenses usually have a magnification ratio of up to 1:2, and the optical design is not as good as that of dedicated macro lenses, but the demand is not so strong, or the economic capacity is not sufficient. For general users, it is also a viable alternative.

In the field of high-precision detection, Lanao lens has obvious advantages. The ML series macro lens is specially designed for macro imaging, specially designed to meet the requirements of macro precision imaging, extremely low distortion, high performance design, 12 million high pixels.