Microlenses are actually lenses with higher magnification and optical qualities optimized for close-up photography. Usually, micro-lenses have a 1:1 magnification ratio, and generally have built-in powerful IS optical image stabilization function, which is convenient for us to shoot at close range. At the same time, the micro lens is not only for macro shooting, but also for portraits, landscapes, documentary still life, etc., depending on the focal length. You may wish to make targeted choices according to your needs and preferences.
For many photographers, macro photography has its own unique charm. Enlarging small objects through the lens can often get an extraordinary and shocking visual experience. As the saying goes, if you want to do good things, you must first sharpen your tools. An excellent micro lens can allow us to better explore the micro world, but do I really need to buy a separate micro lens? It has the same characteristics as ordinary lenses. What's the difference?
The magnification of a micro lens is different from that of a normal lens. First of all, we need to understand an important knowledge point of a microlens - magnification. Simply put, the magnification is the ratio of the size of the image formed by the object on the sensor through the lens to the actual size of the object. For example, a lens with a magnification of 1:1 can form an image on the sensor that is equal to the actual size of the object. Just imagine, if the sensor is 30 million pixels, the photos taken will be enlarged to the point of "shocking". Therefore, professional micro lenses in the usual sense have a magnification ratio of 1:1.
Ordinary lenses do not need too high magnification. When designing, only the imaging quality corresponding to the object distance from infinity to about one meter should be considered. In order to achieve a relatively higher magnification, the closest focusing distance of a microlens may be only a few centimeters, and the imaging quality in a larger object distance range needs to be considered, resulting in a sharp increase in the difficulty of optical design.
So the core of the micro lens is to have a higher magnification than the ordinary lens. Although miniature lenses generally have a large magnification, it does not mean that the existing lens at hand cannot shoot "macro" at all. You may wish to pay attention to the maximum magnification of your lens. In fact, many commonly used lenses , the magnification is also quite impressive.