1. Lens mount

Sony has two lens mounts:

bayonet

e bayonet

A: Sony's A mount was first installed on its SLR body, and then the A mount lens was followed by the development of a single camera. But it is no longer produced. Now all Sony's energy is on the E-slot. Although it has been discontinued for a long time, when I saw Sony official website, it was still selling A-mount lenses.

e bayonets are divided into two categories.

E-mount Quan Huafu lens: it has the highest compatibility and can be used for all e-mount cameras.

E-mount APS-C frame lens: it can also be used on all e-mount cameras, but when it is used on full-frame cameras, there are frame cuts. Simply put, a full-frame camera becomes an APS-C camera.

second, Sony lens classification

you must have seen Sony's Zeiss lens, Master G and so on. But you don't understand these. Here is a brief introduction.

g: Sony's best lenses are characterized by high configuration, high performance, high imaging resolution and, of course, very expensive. The main mirror group G comes from Sony itself as a whole, so it is top-notch in all aspects of Sony.

Zeiss lens: Although it is called Zeiss lens, the lens is not produced by Zeiss, but produced and designed by Sony and Zeiss. But Zeiss only provides labeling and coating, and the rest comes from Sony itself.

g lens: Sony designed and produced its own high-end lens, mainly with medium and long focal length, because it is a lens group for the public.

Master lens, Zeiss lens and G lens are all good lens products of Sony. In addition to these three series, Sony has many other lenses.

III. Lens logo

Regarding the logo of Sony lens, let me show you a picture first:

EF is the lens mount, and some people call it E lens (APS-C format) and FE lens (Quan Huafu) for easy distinction.

If there is only one logo for the focal length of the lens, it means that it is a fixed-focus lens, and there are two logos that indicate that it is a zoom lens.

for the zoom lens, there is only one logo to indicate that it is a constant aperture lens. If there are two logos, it means a floating aperture lens.

if it is g, the lens group logo is g, and if it is GM (main g), it is GM.

OSS lens has anti-shake function.

STF means that the lens adopts apodized optical elements and optimizes defocusing.

summary: the above is a brief introduction to Sony lens. How to buy it depends on your own needs.