This is my first time watching a film on IMAX and I was really impressed. I do not usually watch 3D films because it makes my eyes go funny, but I was able to focus eyes with no problem. The sound system was also fabulous. The only annoying thing was that was that part of the seats surrounding and floor were dirty, where people had dropped their popcorn and left their wrappers lying around. Not that it matters, but the restrooms were clean and tidy. I would of given this 5 stars, but the unclean cinema looses this venue one star. The air-conditioning was set at an ambient level, which made it perfect.
UPDATE 05/07/2017: This was my second visit to the IMAX in Wimbledon. I have updated my rating to 5 stars. The cinema was clean and tidy today and staff very polite.