为什么《谍影重重5》在中国要以3D版上映呢?

Cinemas usually charge more for movies screened in three dimensions, so there's an obvious incentive to show them in the format.

影院的3D影片票价一般都要贵一些，放映3D版电影的动机自然就显而易见了。

But while Europe and the US have seen ticket sales for 3D movies decline, there's still a strong appetite for the technology in China. Many theatres in the country are fairly new and have equipped themselves with the latest projectors.

在欧洲和美国，3D电影的热度逐渐消退，但与此同时中国对此技术的热情仍十分高涨。中国许多新影院都配备了最新的放映机。

When it comes to 3D movies, however, there are two kinds.

但说到3D电影，实际上有两种不同的3D电影。

"Real" 3D movies are shot with a dual-lens cameras, which capture two versions of every shot. Special glasses let viewers see a different one with each eye. Many critics believe this delivers the best illusion of depth.

“真正的”3D电影是用双镜头摄像机拍摄的，每一帧都会有两个不同版本。观众用特制的眼镜就可以在双眼看到这样两个版本。许多评论家认为这样才能产生最好的景深错觉。

But another, cheaper option is to film in 2D and then simulate the effect in post production by using computers.

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