What is a SLR camera and what is its function?

Speaking of SLR cameras, many people will say: SLR is good, SLR is awesome, so what is SLR?

Nonsense version explanation: SLR is those big cameras.

Popular version explanation: SLR is a camera that looks more professional.

Dogmatic version explanation: SLR is a single lens, interchangeable lens and reflective camera. Its biggest feature is a replaceable lens with a reflector.

The price is generally above 3000 yuan. The main brands are Canon and Nikon, and there are also minority brands like Lycra, Pentax and Olympus.

The common camera brands listed in the above picture will be printed on the forehead of SLR cameras. So far, no counterfeit SLR cameras have been found.

The main mark that distinguishes SLR cameras from other cameras (such as micro-cameras) is that they have a reflective framing system.

When you take off the lens of the SLR camera, you will see a small oblique mirror in the fuselage, which is the mirror of the SLR. The mirror and pentaprism are the most important parts of the system.

"Single lens interchangeable lens" means that only one lens can be installed on the fuselage, but this lens can be interchanged.

This is the fuselage

This is the lens.

The fuselage and lens are separate, but various lenses can be replaced, which looks very black and professional. This is a SLR camera now. The following are photos of common SLR cameras at present:

As shown above, these cameras are all SLR, but not necessarily SLR, because they are big and look professional. For example, Sony HX400, Nikon P900S and Fuji S4500 are as follows:

Like this, it is also a dark lump, which looks quite atmospheric, but this is not a SLR, it belongs to a telephoto machine. Now telephoto machine has been basically replaced by mobile phone, and its market share is very, very small.

Why is the telephoto lens not a SLR? Because he doesn't have the two characteristics of SLR-telephoto machine can't change the lens, and there is no reflective viewfinder system.

So what is a reflection frame? The following passage is suitable for enterprising children's shoes. Girls and nervous friends can skip to the next paragraph. )

After passing through the lens, the light falls on the reflector, then reflects on the pentaprism, and then reaches the viewfinder through refraction and reflection of the pentaprism. At this time, it was seen by our human eyes. This is the reflective framing of SLR. This is also the main sign that SLR cameras are different from other cameras (such as micro-single cameras).

In SLR cameras, there are also classifications, but for ordinary consumers, the final thing to buy is money, or to put it mildly, price, so it is also very appropriate to classify SLR cameras according to price. As far as the current SLR market is concerned, below 6000 yuan belongs to the entry level, above 10000 yuan belongs to the intermediate level, and above 10000 yuan belongs to the quasi-professional level or professional level. For family travel, we usually buy a set of machines with thousands of dollars, which is completely satisfactory. After all, the SLR is the photographer's lens, and the fuselage is only the most basic department.

Then what is a set of machines? Don't worry, honey tea will bring you a:

We will often see a single machine or a set of machines on the Internet or in physical stores.

Monomer, as the name implies, is only one body;

Set of machines, that is, the body and lens of the SLR are packaged and sold together, which is more convenient for our tourists to buy and use immediately. ?

The machine set consists of a body and a lens in a packaging box, marked with camera model+lens model+kit, such as EOS 750 18-55 STM kit and D3400 18-55VR kit.

For us ordinary family travelers, seeing the SLR on the first day of the first month is quite a wedding night: Ah! Such a big black lump is terrible! In fact, after understanding the functions of each part, the operation of SLR camera is very simple and convenient.

Knowing so much about SLR, what are the advantages of SLR?

First, a powerful lens group and accessories group.

The development of SLR is relatively long, and it has a very rich set of accessories, such as various lenses, flashlights and filters. , you can take more styles of photos, which is currently impossible with telephoto and micro-single.

Lenses with various focal lengths and functions (such as super wide angle, wide angle, standard, medium focus, telephoto, super telephoto, macro, etc.). ) can be replaced. The large aperture fixed-focus lens has good blur effect, and the standard focal length lens is more realistic, which gives different people more choices, which is also the guarantee of high image quality of SLR cameras and its charm. ?

However, for our daily home travel and study, a suitable zoom lens can fix all the scenes.

Second, the battery life is strong.

Because the SLR adopts reflective framing, the sensor doesn't have to work all the time, only when taking pictures, while the micro-single sensor needs to work all the time, so the endurance of the SLR will be stronger.

Third, the control is convenient and professional.

The more high-end SLR, the larger the fuselage, the more buttons on the fuselage, which can set parameters more quickly, which is very convenient for professional photographers or photographers.

Fourthly, it is better to have an optical viewfinder, which can capture sudden objects (sports events, wild animals).

When shooting an object that can't be aimed at in advance, such as a bird suddenly jumping out of the Woods. At this time, SLR cameras can often quickly aim at birds and focus on shooting.

Fifth, with an independent focusing module, the focusing performance is better.

SLR cameras have independent focusing modules, and compact cameras don't have enough space to accommodate independent focusing modules, so they can only integrate the focusing point on the sensor, so SLR is superior in focusing accuracy, speed and focusing ability.

SLR has so many advantages, but at the same time it sacrifices the size and weight of the camera, so there are advantages and disadvantages, mainly depending on your choice.

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