Do you know the five categories of cameras?
Single electricity and SLR: illegitimate children
Why is Sony the father of black technology? Because it always comes up with new ideas when other people's brains are rigid.
20 10 Sony has reformed the structure of the original reflective camera. At first, except for the above pentaprism, the reflecting plate was changed to semi-transparent and semi-reflective materials. When the light of the object is incident, part of the light can be reflected to the focusing system, and the other part can be directly transmitted to the photosensitive element, so as to realize electronic framing. In addition, this translucent reflector is a fixed structure, so it is not necessary to lift the reflector when pressing the shutter, because the reflector itself is transparent. It has a nice name, Diandian (unique to Sony).
In recent years, there is a great controversy about whether a single camera is necessary. The existence of a half lens is used to solve the camera focusing problem. This is Sony's solution when the early sensor phase focusing technology was not mature. Admittedly, the semi-lens does make the single battery achieve great success in focusing and continuous shooting, but don't forget the influence on the image quality. The half-lens will reduce the amount of light entering, which will affect the high noise control and tolerance of the camera at low sensitivity more or less.
Just when it was once forgotten by the market, Sony released the A99 II this year, giving people the feeling that the immortal bird is back (as if you saw it? Uncle? Smile). It has both high pixel and high-speed continuous shooting performance, showing off a handful of muscles, and that's all.
Paraxial and SLR: grandparents and grandchildren
The BBC's photography genius introduced Leica's paraxial design concept: the viewfinder is located in the upper left corner of the back of the camera, allowing the photographer to take pictures with his right eye without preventing the left eye from always observing what is happening in front.
More importantly, the viewfinder won't be black when the shutter is pressed, so the side shaft will be awarded again? What you shot is what you saw? Good name. This statement is actually wrong because the framing and imaging of the paraxial camera are not on the same optical axis. This structure determines that what you see is not necessarily what you shoot (the parallax of close-up shooting is particularly large), but the SLR camera is what you really see.
Compared with SLR, the paraxial camera has no reflector, so its thickness is smaller (hidden by sneak shots), which reduces the machine shock. Because there is a focus baseline and no reflector, the flange distance is very short, and the wide-angle lens can be very close to the sensor, so the wide-angle and standard focal length are its strengths. The focal length of the lens is limited to 135mm, and the macro lens cannot be used. There is no such restriction in SLR. It is precisely because of the different structures that their photography attitudes are different. The sideline is to think about the camera, and the SLR is to look at the camera.
Non-inverse and micro-single: cloning
Basically the same product.
Before that, the names of mirrorless cameras were very confusing, such as compact system camera, mirrorless system camera, digital single lens mirrorless camera and digital interchangeable lens system camera. Until July 23rd, 20 15, the American Consumer Electronics Association (CEA) couldn't stand it any longer, so it published a new set of camera terminology and digital imaging related name specifications, which led to mirrorless cameras, which were accepted by all major manufacturers except Sony.
Sony China official website, micro-single? In the upper right corner of the word, is there a mark? TM？ Sign. It is understood that? TM？ For English? Trademark? A word? Trademark? The abbreviation of, which means trademark recognition. According to the inquiry, on June 9, 20 10, Sony was interested in? Micro-single? The word, in the camera and other commodity categories to apply for a registered trademark. To put it bluntly, Sony has already told everyone. Micro-single? This name has been monopolized by Lao Tzu since then. You are not allowed to call it, or you will pay protection money.
SLR and No Inverse: Father and Son
What are the characteristics of SLR? Single? And then what? Anti? Let's go So-called? Single? , that is, single-lens framing imaging (relative to double-reflex, paraxial and other cameras), and? Anti? It embodies the essential difference between this camera and other camera products.
In the internal structure of SLR, there is a reflector and a pentaprism for reflecting all kinds of light. These mirrors and the pentaprism (or pentaprism) that send external light to the viewfinder through physical reflection become the main components of a SLR camera, which is also the biggest difference between SLR and mirrorless cameras. Through specular reflection, people can finally observe the object in the viewfinder of the camera, which is called the optical viewfinder. Whether there is an optical viewfinder or not can also be considered as one of the differences between SLR and mirrorless camera.
Without a reflector, how to achieve framing? After canceling the reflector, the light can directly shine on the photosensitive element, and the mirrorless camera can take a view on the LCD screen on the back of the camera by reading the image data of the photosensitive element in real time. This method of directly using photosensitive elements to convert optical signals into electrical signals and output them to the screen in real time is electronic framing. Of course, SLR cameras now generally have real-time viewing function, and the Olympus E-330 released in 2006 was the first to eat crabs.
If you want to go out and brag in the future, remember Panasonic. Although it is very simple now, it is definitely an old hand in the mirrorless cameras market. The first single battery in history was LUMIX G 1 introduced by Panasonic in 2008. At that time, the price was 6,000 yuan, but few people dared to buy it.
Will no order replace SLR in the future? This topic has been discussed for a long time in the photography circle. Even today, Lao Lang still doesn't think so. It is completely divided into two lines to develop, not who replaces who and who destroys who. The advantage of no inversion is that it is light and portable, and the picture quality is close to that of SLR. The advantage of SLR is its quick response. When shooting in complex lighting conditions and harsh environments, SLR is irreplaceable and has abundant lens and accessories resources. Let's not compete in this respect.