If you're a huge fan of the Fatal Frame series or a huge nerd when it comes to Japanese folk culture you would probably be just as disappointed as I am.
The Fatal Frame series always included the Camera Obscura and several vengeful spirits that have major occurring roles. This movie barely has both except for a few occasional appearances and cameos.
Also, call me biased just because I'm an ex-Catholic, but I didn't really like the fact that Christianity, more specifically Catholicism, plays a role in this film. It just seems very foreign and more akin to western horror stories that have more Abrahamic themes to them. The original game series had a dark Shinto/Buddhist motif to them, even more faithful to the traditional Japanese horror theme it always conveyed. Meanwhile this film had none of that. Not a single torii, or Buddha statue was seen, and those two are even major cornerstones of Japanese culture. Yes, this is pretty much opinionated as I like Shinto and Buddhism more than Christianity, but still.