What is a G lens and what are the benefits of a G lens

The G here stands for "Gallant", which is a high-end professional lens. That is, it is equivalent to the "L head" of Canon. Since 1989, Minolta has classified some distinctive large-diameter lenses (that is, professional lenses) produced by itself to form G series lenses (referred to as "G heads").

Sony also inherited the name when it took over Minolta's camera business. Usually the G-head has top-of-the-line workmanship and materials, and has the following characteristics: large aperture, AD lenses, circular aperture, aspherical lenses, floating focus system, high-quality lens body, etc.

Of course, the high-end lenses in Sony's alpha system now, in addition to the G head, also have Carl Zeiss lenses, which are represented by "ZA" in the model number.

G-type lens: This lens does not have an aperture adjustment ring, and the aperture is set by the body. This is mainly due to the continuous advancement of modern 135 DSLR camera technology, and the programmed automatic **P (including fully automatic**) system has become the basic ** mode of the camera.

Because in the program auto (including fully automatic) and speed S priority mode, the adjustment of the camera's aperture size and speed is automatically completed by the camera metering and speed system, and it is not possible to use the lens aperture adjustment ring for manual aperture setting, in order to improve the control performance of the camera and simplify the structure of the lens, the 135 SLR lens produced now basically cancels the design of the lens aperture ring, and only retains the zoom and focus operations on the lens barrel, and realizes the ** control in the aperture priority A and manual M modesThe aperture operation of depth of field control is completed by the multi-function adjustment dial on the fuselage. The setting and adjustment of all ** modes are completed through the multi-function dial of the fuselage, which greatly improves the consistency, convenience and reliability of operation.

Professional-grade lenses made by Sony are high-end lenses from Koneka Minolta.

g Lenses without an aperture control ring.

The G-type lens has no aperture ring design, and the aperture adjustment must be done by the body, and it also supports 3D matrix metering. This design reduces the weight of the lens and reduces the cost of production. The lens is fully compatible with the F5, F100, F80, F65, F60, F55, F50, F401, Pronea, and D1 bodies, and can only be used in Program and Shutter Priority modes for the F4, F90F90X, F70, F801, and F-601 bodies.

Not compatible with the rest of the other airframes. So how do you use a G-type lens?

The G-type Nikkor lens is easier to operate and theoretically error-free, as it does not require manual setting of the minimum aperture. This is a continuation of the plastic AF lens, aimed at photographers who almost never set up their lenses manually. Now Nikon is trending to promote the G-head.

Representative lens: The 28-80mm FA type lens is one of the lenses, but what is the lens? Let me give you a brief introduction.

Introduction to the lens

The lens has two fingers in film and television, one refers to the optical component used by the movie camera and projector to generate the image, and is composed of multiple lenses. A variety of different lenses, each with different modeling characteristics, their application in photographic modeling, constitute the optical watch bureau to show the means; The second refers to a continuous picture taken from turning on to off, or a clip between two lead editing points, also called a shot. One finger and two fingers are two completely different concepts, in order to distinguish the difference between the two, one finger is often referred to as an optical lens, and the other is referred to as a lens picture.

According to the origin of the lens, it is mainly classified as Japanese lenses and German lenses. The Japanese lens mainly has a better color reproduction, and the German lens has a strong sense of hierarchy. Chinese lenses in the market are also gradually occupying a certain market, mainly because they are relatively cheap.

Afterword

What is a G-type lens? The G-type lens has no aperture ring design, and the aperture adjustment must be done by the body, and it also supports 3D matrix metering. This design reduces the weight of the lens and reduces the cost of production.

Although the cost is low, the operation is also simple and convenient. However, not all cameras can use G-type lenses, and I have listed them in this article, so please check them carefully. I also did a little science popularization of the lens, so that you can master more small knowledge.

To put it bluntly, a G lens is a lens without an aperture ring, and this kind of lens can only be used on cameras with an aperture that can be adjusted by the body, and it can be said that it is a lens specially developed for this kind of body, in order to reduce the weight of the lens and reduce the cost. It is different from D lenses (the lens itself has an aperture ring).

Sony's lenses, which seem to have come out after the acquisition of Konica Minolta in '09, are claimed to be Sony's own lenses.

The poor child has to acquire a professional camera manufacturer before he has the strength to produce his own lens.

Canon doesn't have that to say.

Sony G is "Gallant", which is a high-end professional lens. Generally, the G-head has top-of-the-line workmanship and materials, and has characteristics such as large aperture, AD lenses, circular aperture, aspherical lenses, floating focus system, and high-quality lens body.

In addition, Nikon also has a G-type lens, which is a relative to the D-type head. Nikon's G-head finger has no aperture locking ring, and aperture adjustment must be done by the body, and supports 3D matrix metering.

g is with a lens motor, d is without a lens motor and is driven by a fuselage motor.