Shimano saint chain ring lower than 34 teeth? I have just purchased a bike with a Shimano 34T sm-cr82 chain ring and crank set.  Is there a 30teeth chainring that you can put onto it to make it easier to ride uphill?
The smallest SM-CR82 is 34t, but FC-M820 and FC-M825 (one of which is your crank model) can take other 104 BCD rings, down to 30t. 30t 104 rings are a somewhat recent hack/innovation and have to play some tricks to be able to physically work without interfering with the crank (most or all of them have integrated spacers and threads). Most of the narrow/wide chainring makers have a version.