Aspect ratio matters. Imagine these films in another ratio. They don’t work.

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Big Lebowski   |   1.85 : 1
1280 x 692

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Ghost Dog   |   1.85 : 1
1280 x 692

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Moonrise Kingdom   |   1.85 : 1
1280 × 692

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Apocalypse Now   |    2.35 : 1
1280 × 545

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Ex Machina   |   2.35 : 1
1280 × 545

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Mad Max – Fury Road   |   2.35 : 1
1280 × 545

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Casablanca   |   1.37 : 1 (“Academy ratio”)
986 x 720

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Grand Budapest Hotel   |   1.37, 1.85, and 2.35:1

And Beyonce’s Lemonade:

“Beyonce’s Lemonade Video is an Aspect Ratio Orgy”

1.22:1 (fake security camera footage)
1.33:1 (mostly used for archival/home video)
1.78:1 (half of Lemonade used 16×9 framing, typically color)
2.20:1 (only seen once, at the beginning)
2.39:1 (“standard” widescreen was used once for an entire song)
2.67:1 (typically black and white)
2.85:1 (spotted once)
3.50:1 (color footage interspersed through the film)