What is Flat 1.85:1?

1.85:1 – One of two standard aspect ratios that’s more common for cinema. It is wider than 16:9 and was originally used exclusively for movie theatre screens to provide a more immersive experience than TV and replace the 1.37:1 Academy ratio.

Whenever you shoot in a 1.85:1 aspect ratio and display it on a 16:9 screen, you will see the letterbox black bars at the top and bottom of the screen to compensate for the wider image.

When cinema attendance dropped, Hollywood created widescreen aspect ratios 2.35:1 (scope) in order to differentiate the film industry from TV, with one of the most common being the 1.85:1 ratio.

According to the DCI specifications the pixel array size shall be one of the formats listed in the table below:

2K Flat (1.85:1) Resolution: 1998×1080
4K Flat (1.85:1) Resolution: 3996×2160

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