It's a 2.40 (or 2.39) image that is "windowboxed" (black on all 4 sides) within the 2.20 70mm frame. It is 6% undersized as compared against a RP91 target.
Had the image been printed larger so the left and right side reached the 0% crop lines for left and right, the image would still have a small letterbox to it since the image is 2.40 instead of 2.20, but at least it wouldn't have black on all 4 sides. Shaving off a tiny little bit of the image on each left and right edge to blow it up to a full 2.20 height image would have looked noticeably better in most cinemas though.
BTW any 2.20 OR WIDER image should always reach the 0% crop lines as seen in the below photo of the RP91 target. The area from those lines to the perforations are reserved for magnetic audio tracks 3 and 4 and any picture information there will not be projected (such as with the Wonder Woman picture above). The Dune 2 prints however only reach to just outside the 5% cropping line, which is undersized.
Had the image been printed larger so the left and right side reached the 0% crop lines for left and right, the image would still have a small letterbox to it since the image is 2.40 instead of 2.20, but at least it wouldn't have black on all 4 sides. Shaving off a tiny little bit of the image on each left and right edge to blow it up to a full 2.20 height image would have looked noticeably better in most cinemas though.
BTW any 2.20 OR WIDER image should always reach the 0% crop lines as seen in the below photo of the RP91 target. The area from those lines to the perforations are reserved for magnetic audio tracks 3 and 4 and any picture information there will not be projected (such as with the Wonder Woman picture above). The Dune 2 prints however only reach to just outside the 5% cropping line, which is undersized.
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