Did you feet Quality difference between space station 3D
and cars- 2 3D ???
Well that’s not your fault! becuase technology used to render those 3D movies are completely diff!!
Coming to the point there are currently three technologies available to render 3D viz .
IMAX , REALID, DOLBY 3D
so whats the diff. then???
first getting on IMAX technology!!!
Well this is the oldest technology to render movies in 3D!!
When it comes down to the basics, IMAX movies are on an analog film!! difference between the two when it comes to polarization is that IMAX uses linear polarization.With linear polarization, you need to keep your head aligned vertically, as tilting too much can cause distortions in the 3D image
Anyway, getting back to the user experience, there is something very specific for IMAX 3D and that is the fact that the movies shown there are usually optimized for more pop-out screen effect than depth. This means that most of the time objects literally seem to pop out of the screen appearing as if you can touch them, kids do love this effect, but this is also more tiring for the brain.
As IMAX 3D has been around for much longer compared to Digital 3D, it is the more popular between the two. Most users who go to a 3D movie theater are more likely to be walking into an IMAX movie theater, rather than a Digital 3D movie theater, as there are a greater number of IMAX movie theaters in more countries around the world.
Although IMAX has come up with a digital version as an answer to the number of digital formats that are emerging, the use of IMAX 3D still commonly refers to the analog IMAX movie theaters.
Time to praise digital 3D
Digital 3D movies are already in a digital format!! Digital 3D makes it easier and cheaper to distribute movies, as the digital information can be quickly transmitted or transported in more traditional media; unlike film, which can only be transported via courier, and is relatively bulkier.
Digital 3D uses circular polarization. As there was problem of tilting in analogue 3D, there is no such limitation in digital 3D. it looks same from every angle!
getting into details , there are 2 types of digital 3d available REALID and DOLBY 3D
This is a bit newer standard, but a digital one from its start… digital here meaning that the movies are recorded in a digital format and the projectors being used are also digital. RealD 3D cinemas uses circular polarized plastic glasses instead of linear polarized to provide better user experience when watching stereoscopic content. Circular polarization is considered to be better, because viewers are able to move their head as they like without the loss of the 3D depth effect.
The immersion experience with RealD is a bit different compared to what you get at IMAX 3D projections as here the depth perception is of actual depth so the action is more going inside the screen, and not popping out of it. This does not make things less impressive, although some people might get a little disappointed at first if they were expecting to have the IMAX 3D pop-out effects, but after some time of watching they still get the feeling they are right in the middle of the action
Also known as Dolby 3D Digital Cinema is the newest of the three technologies for stereoscopic 3D movie projection and as you can guess not only by the name it is as well digital like RealD.
Here we also have the typical cinema style plastic 3D glasses that use a bit more specific passive filters related to the main colors we see which is by far considered to provide the best results. Of course this special type of polarization brings the cost of the glasses up compared to the normal linear or circular polarized glasses the other technologies use, but there the projection screen doesn’t have to be specific (Dolby 3D at home, anyone?).
For the “impatient” … the summary
1. IMAX 3D movie screens are much bigger compared to Digital 3D movie screens.
2. IMAX 3D movies still use analog film, while Digital 3D movies are in digital format.
3. IMAX 3D uses linear polarization, while Digital 3D uses circular polarization. 4. IMAX 3D is more popular, and is available in a greater number of places compared to Digital 3D.