At present, there are five kinds of 3D digital cinema formats
IMAX passive polarization technology
RealD passive polarization technology
MasterImage passive polarization technology
Xpand active digital shutter Technology
Dolby color separation spectroscopy
Each technique has only the corresponding 3D glasses, and cannot be used in general.
Comparison of 3D glasses with different technologies:
See above, many people may ask, how to distinguish between what the theater 3D? Unfortunately, in addition to IMAX, RealD 3D and Dolby-3D could express in the cinema, into the theater before, you cannot know if they will face what kind of 3D technology. You should know when you get your glasses in the theater. The glasses used in different techniques are different. You can't mix them. The difference is as follows. (notice that the glasses in different theaters may be different from the actual ones):
3D glasses of IMAX and RealD technology are relatively inexpensive, and lenses have polarizing effects that allow special light to enter. The difference is that IMAX uses linear polarization technology, RealD uses circular polarization technology, so the lens looks the same, but the lens itself is completely different, can not mix.
1., bought IMAX glasses, went to the IMAX cinema, but no stereo effect?
Answer: there are a lot of general IMAX cinema hall, such as Wanda International studios, which both have IMAX hall, RealD hall, there may be Xpand hall, the construction of the various regions and Wanda cinema, Wanda is a commercial film center, he can use a projection equipment, can also use a projection the equipment, can have 2D hall also has 3D hall, so not every class is IMAX 3D and IMAX 3D projection equipment, screening equipment is expensive, so the general theater may have one or two IMAX 3D hall, hall, other RealD may be MasterImage, Xpand, Dolby and 3D projection equipment, concrete to ask the theater staff, wearing glasses to the corresponding locations corresponding to the. Glasses should not be mixed.
2. how do you know what glasses you use to go to the cinema? What kind of glasses should I buy?
Answer: consulting theater staff, or contact the owner, or go online to search for the movie theater to view information about the 3D, or projection equipment compare the cinema glasses which meet the above judgment. At present, Wanda International Cinema are IMAX hall and RealD hall and other large theaters such as: Broadway, Lumiere, stellar international, Kodak theater, international film are all IMAX or RealD hall hall.
3. do you have a universal lens that allows you to see 3D movies in every movie theater?
Answer: No, can not do, at present, there is no future can not be. Through the above understanding to 3D there are more than 5 players, each has advantages and disadvantages, each device corresponding to a pair of glasses, can not do a pair of glasses with a unified, under the market economy, not by a bully in the world of technology. (there are three kinds of mobile phone networks, mobile, Unicom, telecom, you can call and send text messages, but a mobile phone card can only use a corresponding network, you can not have a card, which network you want to use)
4. which 3D technology stereoscopic effect of the best theater?
Answer: Generally speaking, the order of stereoscopic effect is: IMAX > RealD > MasterImage > Xpand > Dolby; the stereoscopic effect is better; the cost of projecting equipment is higher. Therefore, IMAX and RealD theaters are generally larger in large cities, and small cities often use low cost Xpand and Dolby technologies. Of course, also has a relationship and watch a good movie theater with the 3D environment, such as screen size, audio amplifier effect, a good movie should be 3D stereo images and stereo sound the audience fully into the film, really shocked 3D personally on the scene, brought from the visual and auditory! With the progress of technology, IMAX and RealD screening technology will also be popularized in small and medium-sized cities to replace the current Xpand, Dolby and other projection technology , which will bring more realistic and more shocking visual effects to the audience!