Half-frame and Quan Huafu, SLR and no reflection, how do photographers choose?

This is a good question. Every kind of camera has its own value. There are no cameras that don't work well, only photographers that don't.

Half-width SLR, full-width SLR, half-width without inversion and full-width without inversion all have their own advantages and disadvantages.

First of all, the difference between half width and full width refers to the size of the photosensitive element. The so-called full width means that the size of the photosensitive element is the same as that of the previous 35mm film. And that half, in fact, the correct name is APS-C frame, which is smaller than the whole frame.

The area of Quan Huafu is 24mm×36mm, while that of ordinary APS-C frame is 24.9× 16.6mm, with an area ratio of 2.09: 1. That is to say, the photosensitive element area in Quan Huafu is twice that of APS-C frame, so APS-C is also called half frame or C frame, and some people even call it residual frame.

1, different viewing angles lead to changes in the equivalent focal length of the lens.

In this paper, I don't want to talk about the specific principle, but mainly give a conclusion that lenses with the same focal length are connected to different cameras, and half-frame cameras need a conversion system. For example, Canon's half-frame conversion system is 1.6 and Nikon's is 1.5.

Take the Canon camera as an example. When a 50 1.8mm lens is connected to Quan Huafu, the focal length is 50mm, but when a camera with APS-C format is connected, the equivalent focal length becomes 80mm, and the aperture will not change. In other words, a standard lens becomes a medium focus lens.

So the wide angle on a half frame needs a shorter focal length, and the telephoto is earned. For example, a telephoto of 300mm is equivalent to 480mm on a half frame!

2. Size and weight of the camera

Because the imaging unit in the camera is small, the volume of the half-frame camera is relatively small. So the size and weight of a half-frame camera will be smaller than that of a full-frame camera. This is advantageous in terms of portability.

It's just that it's bulky and heavy, and it's not all shortcomings. For example, if the professional camera is large, the layout of buttons can be more stable, more buttons can be arranged, which is more conducive to holding and controlling, and more functions can be accommodated, such as the anti-shake components of the fuselage.

3. Pixels per inch of the camera

The same pixel value, because the imaging unit area of half a frame is reduced by half and the pixels per inch are doubled, will lead to weak high sensitivity and difficult pixel improvement.

For example, Canon 90D and M6 II currently have the highest pixel values, reaching 32.5 million pixels, while the current record of full-frame cameras is 6/kloc-0.0 million pixels of Sony A7R4.

Second, there is no denying the difference between SLR and non-reversal. Compared with no reflection, SLR is a new species. The mirrorless camera does not directly omit a reflector and a pentaprism system from the SLR, but has an impact on many functions of the camera.

1, frame mode

Because the mirrorless camera does not have a reflector and a pentaprism, the way of framing becomes electronic framing, that is, light directly enters the photosensitive element through the lens and is electronically imaged.

There will be some differences between the optical imaging of SLR and the electronic imaging without reflection, and the electronic imaging will be weaker than the optical imaging because of the refresh rate.

The advantage of electronic imaging is that it can display the exposure effect in real time through the image processor, which is the so-called simulated exposure, which is quite useful for exposure control.

2. Focus mode

In SLR, the focusing system is separated from the imaging unit, so there will be differences in theory, that is, some lenses are out of focus in use. But the focusing system and the imaging unit are integrated, and the focusing is relatively more accurate.

At the same time, it can also realize more interesting and practical eye focusing function, identify human eyes and even animal eyes, and improve the accuracy of focusing.

3. Video shooting performance and anti-shake of the fuselage.

Compared with SLR, the mechanical structure is simplified and the electronic structure is strengthened. So generally speaking, the video shooting ability of SLR is better than that of SLR. For example, the latest EOS R5 already supports 8K video shooting, which can be said to be the strongest camera and a full-frame camera.

On the other hand, in addition to the video function, there is also a very practical anti-shake function of the fuselage, which is not available on the SLR.

4. Mute shutter and continuous shooting speed.

With the help of electronic shutter, silent shooting and faster continuous shooting speed can be achieved.

5.R&D and changing speed

Because the mechanical structure is simplified, the irreversible R&D and update speed are accelerated. For example, Canon 5D series is updated every four years, while Sony A7 series is shortened to more than two years.

6. Volume and weight

Although not all mirrorless cameras are light, for example, in order to pursue better weather resistance and heat dissipation, Panasonic's Quan Huafu reflector is even heavier than SLR, and its weight and volume are also larger, but in general, mirrorless cameras are still relatively light. For example, Canon's EOS RP can be regarded as the lightest full-frame camera today.

7. Endurance

The degree of electronicization is high, and the power consumption is relatively high, which is manifested in the endurance of the camera, and the difference is significant. But this is not a big problem, just bring a few more batteries. It will only bring inconvenience to replace the battery, or forget the embarrassment of charging!

Third, the idea of buying four cameras must first explain that the four cameras are not absolutely good or bad, and they should be chosen according to the purpose of photography.

1, there is no negative representation of the future, and SLR will exist for a long time.

Ma Yege pointed out in many articles that no reflex will replace SLR and become the mainstream of 35mm cameras. But it is not a complete substitute. Just as the film machine is still in use, the SLR will coexist with the mirrorless camera for a long time.

2. Dialectical use of half angle and full angle

Ma Yege has always suggested that upgrading to Quan Huafu is the only way for photographers who pursue image quality, but for eco-photographers, half-frame cameras also have certain advantages, such as taking advantage of telephoto lenses!

3. Half a picture is synonymous with lightness.

Typical representative is Canon's EOS M series mirrorless camera, and Mustang Brother has an EOS M3, which has good picture quality, small size and is very portable for daily use.

4. Quan Huafu is the development trend of professional cameras.

Due to the various performance advantages of mirrorless cameras, it is more important that today's cameras not only take excellent photos, but also shoot videos. Therefore, Quan Huafu has become the first choice for professional photographers. As for the battery life, it is actually very easy to solve.

5. Half-width SLR and full-width SLR will be transitional products.

Under the general trend that SLR will withdraw from the main venue more and more, it is not recommended to buy a brand-new machine unless there is a deep plot for SLR.

However, for the purpose of learning and transition, Brother Mustang will still recommend friends who want to learn photography to start with SLR cameras, so as to better lay the basic skills of photography. Because the mirrorless camera has surpassed the SLR in ease of use, that is, mastering the SLR, you can naturally get started!

Finally, photographic equipment is only the basis of photography. No matter what you choose, you can shoot good works with your heart and diligence!