On May 7th, an open and fair consumer shopping platform, "What's Worth to Buy," released a cinema consumer guidance article entitled "Love No Technology." The starting point of this article is good, but it may be because of the lack of understanding of the film from shooting to screening, some technical mistakes and insufficient systematization. As a former employee of Ai No Technology, I am also a member of the Love Lab and give everyone a thorough and thorough explanation of the format of the film. I hope that I can help you choose a photo studio. The first is that the image has the following format: Films: Although the current movie screenings are mainly based on digital projections, they do not prevent film from being used for filming. Formats, including 16mm film, are used. For example, the recent hot film "The City of Philharmonic" shot coarse particles. 16mm film footage. There are many aspect ratios in movie screens, but in many cases only one type of film is used but the usage is different. For example, 70mm film and IMAX film film are shot on 70 (65) mm large-format film, but the former is “walking†and the latter is “traverseâ€. The picture is much smaller: Due to the vast majority of films in 35mm film format, the film is displayed at 24 grids per second. There are fixed-pitch apertures on both sides of the film, and the film length per second is the same. Different frame ratios can only be deformed or cut. Cut to achieve. As shown in the figure below, the proportions of 2.65:1, 2.55:1, 1.37:1, 1.85:1, 35mm films, and the same length are all 4 squares. For example, "Interstellar" IMAX film screening ratio is 1.43:1, 70mm film screening format is 2.20:1, both of which are the proportion of screen ratio and film picture ratio. The 35mm film projection ratio is 2.35:1, you need to first stretch the picture to fill the film, and then through the deformation of the lens back to restore on the big screen. 35mm film if you do not perform the "first deformation, then restore" method, it will be like the following figure, wasting nearly 1/2 of the photosensitive area. Originally smaller than the IMAX 15-hole film area, it is wasted half, and the clarity can be imagined. The larger the film size, the more detailed the details and the less noise. From the movie shooting, the quality of the pictures taken with larger size film is relatively more secure, because the screen area is larger and the composition is not compact enough to be shocking enough. The digital cinema camera, like the film, has a small format: Super 35mm Shooting is highly accurate even at 8K, but whether it can be played back at high fidelity in theaters, it is necessary to speak of projection technology. Let’s begin with the latest movie “Star Wars 7: The Awakening of Principles†as an example: The film was shot on an IMAX film camera. The format was IMAX film/laser (1.43:1@4K), IMAX digital (1.90:1@2K), and 35mm film/digital (2.35:1@2K). In Mainland China where IMAX film copies have not been imported, the best version is undoubtedly the IMAX laser, which is a complete picture that can be seen on the right side of the picture, and you can still feel the conditions for such movies. I chose the IMAX number twice, so there are two more small images than 2.35:1. For "Saili Captain", Arri Alexa IMAX camera sensor size is 54.12x25.58mm, native screen ratio is 2.1:1 and 70mm film is similar, and the IMAX version of the copy distribution ratio is 1.9:1, this type of film did not see IMAX Laser Hall on the do not need resentment. summary: From the perspective of the screen, we first look at whether the recommendation of Ai No Technology is useful: The first unreleased film of Ai No Science’s "actual combat" was "Pirates of the Caribbean 5: Dead and Wrong" First of all, it can be clearly seen from the IMDB that the IMAX digital 1.90:1 copy was released, and the version is usually 2.35:1. If you follow the "line" or "not" criteria, the most complete picture of the "Pirates of the Caribbean 5" is only in the IMAX room. Love No Technology: "The whole film is only 2.35:1 normal format, there is no IMAX special format, the option is unchanged." The second film of Ai No Science "actual combat" is "God steals Daddy 3" The IMDB can see that the original ratio of the animation is 2.35:1, there is no special proportional copy of the IMAX version, and the print format is 35mm film/number. Love No Technology: "Look at the poster, there is no IMAX, it means not in the IMAX room, the remaining Dolby theater and can see can not see" The multiple choice question should be like this? 1.IMAX 2. Dolby then choose one. No matter what IMAX filming did, there is no question of selection. In addition, even if the posters have IMAX logos, "Plate" does not necessarily give you a row, such as the "Master of Memory" rushed in the "Super 8" and "Galaxy Team" screens. There is currently no IMAX slice for a movie. In fact, it can be easily found on IMAX's official website http:// (Of course "Memory Master" page is sorry). The third film of Ai No science and technology "actual combat" is "Disarmament Expert" I really feel powerless here. The IMDB can see that the film is normal in shooting technology: 2.35:1, Dolby 7.1 surround sound. Do you not understand that if you choose such a movie as a “real combat†sample, is it different from the above-mentioned Xiao Huangren? Let's take a look From 1 to 5 items to a puppy, you don't run fast with leopards, you don't have huge elephants, and you don't have giraffes. This can endure, but: 6. And you see only the "Chinese giant screen" and "4DX" are obviously nonsense on the poster; Ai No science and technology describe this "China's giant screen": China's giant screen (also known as DMAX, CGS) China's giant screen is the cottage version IMAX launched by the China Film Consortium, which features a large screen and low prices. Technically speaking, China's giant screen is not comparable to IMAX. There is no patented technology, no professional transcription technology, and no professional screening technology. Even China’s giant screens do not have uniform standards: a better one may be equipped with a Buck laser projector, which is poor in order to imitate IMAX’s 1.89:1 large format, and simply cut the picture left and right, forcibly zooming in. loss. That is, the Hall of Shadows (refer to the third step: see the frame of the movie). The audio configuration of China’s giant screen room is not fixed, and some movie theaters will be equipped with Auro 11.1 stereos, as well as ordinary 7.1 channels. The sound effects of Beijing China Star UME China's giant screen room are good, but the high frequency unit of the Chinese home theater in Zhangjiakou's China Music Studios City Center has not been repaired for more than half a year. The corresponding IMAX audio is laser calibrated every day. Do you know where the difference is? It can be said that if you have Auro 11.1 near you, then you will treat it as a hall of Auro, ignoring the ingredients of the “great curtainâ€. If you have a fare of more than 30, you can go to TM. Wikipedia's DMAX entry has two pieces of information: 1. China's giant screen standard size 20x12m; 2. Litigation: Former employees who worked at IMAX for 10 years stole IMAX trade secrets, IMAX reported DMAX infringement led to renamed GFGS (China Film Giant Screen). Ai No Technology said that "China's giant screen is the cottage version of IMAX" and "China's giant screen and IMAX have no comparable" is slightly less rigorous? From the viewing angle, regardless of the Chinese giant screen, IMAX who is better, there is no IMAX version of the copy of the movie, or even Dolby theater, fans how to choose? How can you say "don't read" this subjective word? First of all, China's giant screen is a two-machine, 20x12m full-screen ratio of 1.67:1, the ratio is not love or science and technology that "imitation IMAX 1.89:1." I usually watch the movie, IMAX digital preferred, no IMAX to choose the Chinese giant screen. Dolby Cinema is a newcomer and I haven’t formed a habit yet. Online said that Wukesong’s Dolby Theater screen has been frustrating for a long time because of the dual-integration problem. I saw this year at the Beijing International Film Festival and found that it was the case. I was told to the organizing committee that half of the screen was ghosting. Feedback from the film festival was already told. The problem was solved when I went again. Ai Noi technology to mention Zhangjiakou, China's giant screen tweeter unit was broken for more than six months no one repaired to say poor quality control, then this Dolby cinema was completed one year soon no one is how is it? I was recently shocked by the Cantonese version of “Spring Blessing†in UME China Star's giant screen, first shocked by the title's n ss!w!, the whole movie is immersed in the screen, and it looks good and relaxed. Time Member Price 68 I think value for money. Dolby Theater is a cinema that combines both Dolby Vision and Dolby Sound. According to Wikipedia, Dolby Theater has a higher contrast ratio. After Dolby optimizing the gamma value, it can reach 7500:1, which is much higher than the IMAX laser's 2500:1 or more. The audio track is also a special panoramic sound in the late period, with sound from the top of the head. IMAX and Dolby both involved in the creation phase. IMAX started from the beginning of the filming process by allowing filmmakers to start from the screen. Dolby Theater started from the sound during the shooting stage. And there is also a technology that can intervene in film production: 4D. 4D is the type of "resolutely unseen" movie room from the very beginning of the Aiwa Selecting Studio. I have also seen several generations of 4DX technology. The generation feels better than the previous generation. At present, it can be precise that each punch can be synchronized and the strength can be different without making people feel mechanical. "Snow Country Train" I have seen the 4DX version once again, which is a good experience. It was 2014. "Snow country train" this art film can see 4DX, I think the car scene, action drama even more. However, please note that 4D screenings such as 4DX are just a technique that requires a second second of effort in the post-production of the film. The final result is determined by heart and mind. This depends on whether the film is conscience. You can't beat this technique with one or two 4D pieces that you try or conquer. IMAX dive to 23Hz bass is also to bring "sensible" shock. The last thing to say is 3D. People wearing glasses have much higher 3D technical requirements than those who do not wear glasses, because there is a comfort problem first: you need to wear 2 glasses. After watching Li An 3D/4K/120 frame "Billy Lynn's midfield battle" twice, I came to a conclusion about 3D: 3D glasses are definitely not comfortable, but this is a new 3D viewing experience It is not a problem to tolerate 2 hours. It is not worn from morning till night. Including the old version of IMAX 3D glasses is looser than the new ones, but the new ones are not unbearable. The key to watching 3D is bright, and the meaning of white is to hide 100 ugliness. Do not confuse the structure of the glasses. As I see the Li An movie, it is simply a bright dog's eye. It does not feel that Dolby glasses are seriously reflective. This movie is so bright because it uses two top digital projectors + full power output. summary: My career is a photographer. My hobby is watching movies. I am keen to experience various video and audio technologies. For the current replacement of film technology, in addition to the increase in the resolution and resolution of films that are appealing to IMAX film, and the pioneers who combined the latest technology and artistic expression with director Li An, the shock is like the first audio film. Jazz Singer allows the piano to be synchronized with the playing movement. Of course, new technologies are inadequate, but as long as they are sincere, they deserve support. Outdoor Bluetooth Speaker,Sound Equipment,Active Pa Speaker,Professional Speaker NINGBO RFUN AUDIO TECHNOLOGY CO.,LTD , https://www.mosensound.com
16mm film
35mm film
70mm film
IMAX film 
The figure above is the original film record of the 2.35:1 ratio movie. The figure below is the image without distortion. 
65mm 
1. In terms of aspect ratios, of the wide variety of projection technologies currently available, only IMAX will issue copies of special aspect ratios, and indeed more content.
2. Watching movies with IMAX film clips, domestic only can enjoy the full picture in the IMAX Laser Studio, regardless of whether the movie is 3D or not.
3. An IMAX movie with a ratio of 1.90:1 is necessary to be enjoyed at the IMAX Digital Cinema, as non-IMAX studios usually show a 2.35:1 version. 
7. Don't read it. 
1. China's giant screen is not a return ticket price, no Chinese giant screen also try to select a double room or a single room with a high single (such as M. Sanlitun M.).
2. Dolby Cinema is a full version of the panoramic sound and shadow room screen, the first choice for fans of sound quality requirements, such as "burst drummer" this type.
3.4DX see no brain action is a good experience, may wish to try when the second brush, or when to lose weight. 
