Sigma 10-18mm f/2.8 DC DN Contemporary.

• Ideal for landscapes, travel, video and online content creation
• Large-aperture, ultra-wide-angle zoom with expressive imaging capabilities
• Create expressive images on the go with the world's smallest and lightest ultra-wide-angle zoom lens for APS-C cameras

Adding my two cents here since I've been using the X-H2 for about a year now and I'm super happy with it. Its definitely a beast for the price. Just curious tho, what are you actually planning to shoot with the wide lens? Is it mostly architecture or are you doing more hiking/landscape stuff? I only ask because I brought a whole wide kit to the Grand Canyon last spring and ended up barely using it because I got distracted by a family of bighorn sheep near the trailhead. Spent the whole morning just watching them and talking to this park ranger who used to live in my hometown. Small world, right? We spent way too long talking about the old pizza place that closed down ten years ago instead of me actually taking photos. Anyway sorry kinda went off topic there... but yeah, let me know your use case!

Yep, this is the way

Any updates on this?

For wide-angle prime lenses, below are some top recommended lenses:

• Sigma 16mm f/1.4 DC DN C
• Fuji XF 23mm f/2 R
• Fuji XF 16mm f/2.8 R WR

Sigma wide-angle lenses are seems much cheaper than Fuji ones.

Tamron 11-20mm f/2.8 lens is another good choice.