I just got the X-S20 and I'm honestly freaking out a bit because I have this big hiking trip to Glacier coming up in two weeks and I still havent picked a wide lens. So I was thinking about the Sigma 16mm f1.4 since everyone says it is the gold standard for sharpness but then I read it's kind of a brick to carry around all day and might feel unbalanced.

Then I saw the Samyang 12mm f2 which is way wider but I'm so confused about whether the autofocus version is actually reliable on Fuji bodies or if I'm just wasting money. My logic was that wider is better for the big mountain views but I dont want to be stuck with a lens that hunts for focus constantly... my budget is strictly capped at $350 which makes it even harder to decide which trade-off to make.