>>3548065I don't think a viewfinder is necessary for cameras like the Ricoh GR or the Fujj XF10. For one thing they're not really supposed to be brought to your eye to compose, the field of view is very wide and snap focus means you can extend your arm and fire off shots without worrying about the focus being correct. So long as the subject is within your radius for snap focus it always will be. Plus 28mm fov is so wide that I find a viewfinder kind of redundant, everything is in the frame already so there's no need to check what the camera sees like a 50mm or beyond.
In saying that there are viewfinder attachments for Ricoh and everything else, there's some guy from Israel on ebay who makes cheap 3D printed viewfinder attachments. So if you really really need one there's always that.
This video of Daido Moriyama is how I use my GR.
https://youtu.be/VCL1SnIYZUw 