Excerpted from: China Video Business Network If you have a collection of DVDs, you will find that some movies are full screen, and some is a wide screen. Take a look at the box, a variety of numbers, 4: 3, 16: 9, 1.33: 1, 2.35: 1, 1.85: 1, may not be more touch, this is Aspect Ratio, which is temporarily translated as a high ratio.
The so-called Aspect Ratio describes the appearance of the screen appears on the screen. Take 4: 3, 4 refers to the width, 3 finger. To understand this problem, you have to review history.
Edison used the first volume of the movie film in the laboratory of 1 inches wide, 0.75 inches height, in order to avoid the decimal, we have become the most familiar 4: 3, the standard format for the film production lasts for 60 years.
Then there was a watershed in the history of American history: TV is booming. During a period of time, the 4: 3 wide ratio with the rectangular TV screen is very good, and there are more and more families who purchase TV. The film company has to use the new format to attract the audience from home. Back in the theater. Before you understand the broad screen, let's first familiarize with Cinemascope, Panavision and WideScreen, which can be translated as a wide silver, but not exactly the same. WideScreen is a general name, Cinema-Scope is a name of a wide silver-curtain system, also a trademark, and the width of its screen is about 2.5 times height. Since the 1970s, this wide silver screen format became Panavision (also as a trademark), which was born 2.35: 1. It should be pointed out that not all films filmed by Panavision are wide.
If the director shooting the film is used as a Cinemascope or Panavision with a wide lens, the screen is compressed to a movie film of 35 mm, and is still the kind of Idi. In the cinema, the picture is restored to a normal form, which sometimes causes the image to distort, and we call an Aamorphic Distortion. This phenomenon will happen when making DVDs, but its advantage is the same as the audience as seen in the cinema.
Transplanting the cinema to the family means sizing the wide silver screen to the normal TV screen. Since the width of the wide silver is 2.35 times the height, the TV is 1.33 times, and the conversion work needs later production equipment, we put it for home The preparation process of the issuance is called "PAN & Scan". The skilled person is concerned that the motion or conversation occurs, and the screen that is not suitable for the TV screen is cut off. Director and fans are not passionate about "pan & scan" because it severely changes the picture structure at the time of shooting, and the audience is not the truthful intention of the director. There is also a similar problem for another aspect ratio 1.85: 1.
1.85: 1 Between pure wide silver and "pan & scan", it looks very similar to Panavi-Sion, but there is no additional cost of the lens and deformation. Unlike the "Pan & Scan" cut out, 1.85: 1 is the top and bottom of the movie picture to the pad, let you see what you see. The way to solve this problem is to add a black side and manually manufacturing Cinemascope on the screen.
Then why don't you produce 2.35: 1 wide silver TV set? It is great to make a movie, but it is not worth it with Panavision's normal TV program. Moreover, if this is true, the evening news looks like a haha mirror, some people are short and fat, some are high and thin.
The birth of high-definition television solves the problem. Mathematics believe that the best distortion of these different standards is 1.77: 1, which is all well known to 16: 9. Although it is not completely solved, it is already an ideal method. When a movie releases DVD, the production company can use a screen aspect ratio or two versions of WideScreen and Pan & Scan on the same disc. Don't expect which Aspect Ratio will get an overwhelming advantage. Because as long as there is these two big camps, the one wants to appreciate the real intentive movie enthusiasts, and the other can give up the original structure, and I don't want to see the full-screen fan of the black side, then the debate about this topic may never stop .
