What are M S settings?
The m and s settings are settings determining size of medium and small images on the xz1. You are not likely to need to bother with them at all.
The other two posters are referring to two of the exposure modes , manual exposure and shutter priority.
'It is nice to be important but it is more important to be nice'
|Valley by the light of a blue moon by cjf2|
from Down in the Valley
|Lake Erie Stone Pier by yobbyt|
from Dock or Pier
|Hong Kong by Zephyr1977|