What's the best movie format?
A friendly guide to the wonderful (and confusing) world of premium large screen formats.
02
What does each format brand mean?
Brands signal the format family. They don't guarantee screen size, shape, or quality.
IMAX
The scale pick. Bigger screens and sometimes a taller image — but IMAX screens vary more than any other label.
Usually means
A premium auditorium designed for scale and immersion.
Doesn't guarantee
The largest screen near you, laser projection, a 1.43-capable screen, or expanded scenes for this movie.
Check next
Screen size, aspect ratio, projection type, and whether the movie expands in IMAX.
03
Does Aspect Ratio matter?
Aspect ratio is the shape of the image, not the quality. Some IMAX scenes reveal more picture on taller screens.
1.90 — The common digital IMAX ratio. Taller than standard widescreen, used across most IMAX auditoriums. Width held constant: taller ratios reveal more above and below.
Why IMAX film is a different beast
An IMAX film camera is roughly the size of a small fridge; a standard digital cinema camera fits in your hands. Same scale below.
Sizes approximate, drawn to the same scale.
04
Is 70mm the same as IMAX 70mm?
No. Standard 70mm runs vertically through the projector. IMAX 70mm runs horizontally — a much larger frame, made for giant 1.43 screens.
Standard 70mm
Film runs vertically — 5 perforations per frame
IMAX 70mm
Film runs horizontally — 15 perforations per frame
Proportions simplified — hover or focus a card to compare.
05
FAQ
What's the difference between IMAX and Dolby Cinema?
IMAX usually wins on scale; Dolby Cinema usually wins on contrast, black levels, and sound.
Are all IMAX screens the same?
No. Size, shape, projection, and seating vary by location.
What are RPX, XD, BigD, and other chain-branded formats?
Chain-owned premium large-format screens. They can be excellent, but specs vary by location.
What are 4DX and ScreenX?
4DX adds motion and effects. ScreenX extends select scenes onto side walls.
What does “Filmed in IMAX” mean?
Some scenes were captured or finished for IMAX's taller ratios, so compatible screens may show more image.
Why does the picture change size during the movie?
The movie is switching between aspect ratios, often for IMAX-expanded scenes.
Is a premium format ticket worth the extra cost?
It depends on the movie and screen. Bigger spectacles usually benefit most.
Why did the picture look so dark?
Brightness depends on projector power, calibration, 3D equipment, and maintenance.
How do I choose between multiple nearby theaters?
Compare screen size, projection, sound, distance, and showtime.
How reliable is the alpha database?
Use verified/trust labels; some measurements remain unknown or unverified.
How do I submit screen dimensions?
Use the question-mark button on a theater card, or the footer form for official updates.
Where does the data come from?
Alpha data notes
Alpha data comes from public listings, LF Examiner/IMAX datasets, community reports, and ongoing verification. Some dimensions are unknown or unverified.