Answer by
JonathanMoisanakaDJOPhotow (7)
When inside a church, I use a fast lens (f/2.8 or faster) and I set my ISO somewhere between 640-1000. That way, I get natural looking photos without having to use the flash (a camera with good noise management like the 5DMarkII is recommended). If I have to use a flash, I bounce it off the ceiling using a Lightsphere.