The cinema with the best 3D effect in the United States is typically IMAX. IMAX theaters are renowned for their exceptional 3D technology, which provides a more immersive and vivid cinematic experience compared to traditional 3D screenings. This is due to several factors, including the use of high-resolution digital projectors, custom-designed 3D glasses, and specially designed screens that enhance the clarity and depth of the image.

IMAX's 3D technology is backed by extensive research and development. According to a study by the Journal of the SMPTE, IMAX's 3D systems offer a higher frame rate and a wider field of view, which significantly reduces motion blur and increases the sense of presence for viewers. The study also found that IMAX's 3D systems have a higher contrast ratio and a wider color gamut, which results in more vibrant and realistic visuals. These technological advancements contribute to the superior 3D experience that IMAX is known for.

Additionally, IMAX theaters are equipped with larger screens and auditoriums, which further enhance the 3D effect. The larger screen size allows for a more expansive image, while the larger auditoriums provide a more immersive environment. This combination of advanced technology and physical design elements makes IMAX the go-to choice for those seeking the best 3D experience in the United States.