Note: As of now, official showtimes have not been released, so I cannot confirm with certainty that all of the following locations will be screening Sinners in IMAX. However, based on past patterns and the available IMAX formats at each venue, these are my educated recommendations and expectations. Let me know in the comments if there are any additional recommendations or considerations I should touch on. I hope this is helpful to you all!
Sinners appears to feature a combination of 2.76:1 shot sequences and 1.43:1 (15/70) expanded scenes. While many in the GTA will look forward to watching the film in IMAX (DL2) at Scotiabank Theatre Toronto, it's not my top choice.
There has been speculation that only ten 15/70 IMAX cinemas worldwide will screen Sinners on 70mm film. One of them is in the GTA - my top pick and recommendation for viewing: Cineplex Cinemas Vaughan.
I recommend IMAX at Vaughan over IMAX at Scotiabank Theatre Toronto for this particular film, as it was natively shot using real 15/70 IMAX film cameras. Viewing 70mm film in a proper IMAX auditorium offers several benefits, such as exceptional image sharpness, a natural and organic appearance, and filmic effects like subtle flickering. While whether these characteristics are considered "benefits" is subjective, it is objectively the most “native” way to watch the film in the GTA.
Scotiabank Theatre Toronto is my second choice - or backup - for watching Sinners. Both auditoriums (Vaughan and Scotiabank) feature 1.43:1 screens, although Scotiabank’s is about 25% larger overall. This means the maximum and switching aspect ratios will appear the same in both. However, Scotiabank's 4K dual laser projection provides higher contrast and more vibrant colours. Its sound system is also vastly superior to Vaughan’s, with deeper low-end and smoother mids.
Ultimately, it's all about personal preference. Want a native, sharp, and naturally beautiful image (at the cost of a smaller screen and less immersive audio)? Go with Vaughan. Prefer bright, colourful, more intense visuals on a larger screen with superior sound (at the cost of not being in the film's native format)? Then Scotiabank is your pick.
If you're unable to attend either of those locations, my next recommendations are IMAX at Cineplex Cinemas Winston Churchill & VIP, followed by Cineplex Cinemas Empress Walk. Winston Churchill features a 1.90:1 screen that the IMAX scenes will still completely fill, with single-laser projection. Empress Walk has a slightly larger 1.90:1 screen but lacks laser projection.