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Buckle up, kkelmyss.
There are two film formats still projected in theaters today: 35mm and 70mm (aka 65mm).
35mm was repurposed from Kodak's 135 photographic film standard. Instead of running the film horizontally behind the lens, it was run vertically. This enabled more exposures per foot of film at less resolution. But as cinema grew in popularity, the desire for cleaner images and higher resolutions also grew. Larger exposure area was necessary to achieve this.
Cinerama was a cumbersome, yet impressive, short-lived solution. This standard required three synchronized 35mm cinema cameras to record the movie and three synchronized 35mm projectors to display the three separate film reels as one large-format ultra-wide image. Insane and beautiful.
VistaVision was a simpler solution. It simply rotated the 35mm film 90 degrees and ran it horizontally behind the lens like still cameras. This significantly increased the exposure area and thus the resolution. VistaVison was only relevant for about 10 years but laid the groundwork for future innovation. The format was famously used by ILM for its renowned special effects, starting with Star Wars. And was resurrected last year to film The Brutalist.
70mm was the straight forward answer to increasing exposure area—just make the film bigger. This standard was run vertically past the lens like standard 35mm and offered nearly double the resolution. 65mm film is actually used for shooting and the finished movie is transferred to 70mm film for projecting. The terms are used interchangeably because they both contribute the finished product. Lawrence of Arabia is a notable film shot using 70mm to accommodate its ultra-wide vistas.
IMAX 70mm took inspiration from VistaVision. It rotates 70mm film 90 degrees and runs it horizontally behind the lens further increasing the exposure area and putting it within spitting distance of medium format photography. These are big-ass exposures. It's dramatically more expensive to shoot and project movies in this format. But it produces a gorgeous high-resolution image. And gives Christopher Nolan a huge hardon.
Acquisition formats vary for movies. But when it comes to projection, there are predominantly only two film formats today. You're most likely to find a standard 35mm projector at your local independent theater. IMAX 70mm is the other and it's even rarer. Standard 70mm projection rarer still.
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Feb 11, 2025

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i think i love u omg thank you so much for sharing and for the visual explanation too!! feeling like a true #cinephile right now after finally understanding the difference LOL
Feb 11, 2025
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kkelmyss all you need to do to be a true #cinephile is love movies
Feb 11, 2025
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lucius yk what… hell yeah
Feb 11, 2025
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thank you very much, love the diagram!
Feb 11, 2025
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tiff i should just put this on my blog tbh
Feb 11, 2025
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Wish i had waited to get the 70mm promotional strip theyre doing this weekend but cant win them all.
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When I was in my early 20s I worked at a video store called Limelight - the kind of place that had every Takashi Miike movie ever (including his children’s movies) but kept their lights on by stocking 5 copies of Pride and Prejudice. After that, I was lucky enough to get a K********a invite which allowed me to torrent deep cuts by Olivier Assayas, and prized .mp4s of Cameron Jamie’s movies. Maybe I just didn’t like leaving the house but I don’t think that 2005 - 2015 were great years to be going to the theater anyway. When I moved back to Vancouver I didn’t know many people so my sister suggested I volunteer at The Cinematheque, and it’s become one of my favorite places in the city.  It’s basically got a lot of the same programming as The Metrograph minus a lot of the annoying pretensions of arthouse theaters that are… annoying. The Cinematheque even went through a redesign and it looks even better than it did before which never happens. Volunteers get to see whatever for free so sometimes I find myself there 4 times a week. Some of the most memorable screenings include Maborosi, The White Sheik, Even Dwarves Started Small, Caught By Night, Gun Crazy, and Out Of The Blue.
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