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I've been trying out a Helios M44 58mm manual lens with an X-E2 and been having problems with focusing accurately. 1. With the Helios my results are proving hit and miss. When I set to infinity according the focus dial, it doesn't seem to guarantee sharp shots at a distance. Close up shots seem better but I've just started trying the helios and have been surprised at how many shots focused on more distant subjects have not been very sharp. Why would this be? 2. Is the x-e2 viewfinder not wysiwyg for focus purposes? ie if I have confirmed accurate focus through the viewfinder (with the help of focus peaking), all other things being ok (no vibration, lens good enough etc) should the resulting shot be sharp as indicated through the viewfinder? So, even if the lens is not correctly focusing based on the ring callibration, should I not still get a sharp shot? 3. if the solution is adjusting the helios lens, can anyone help with the easiest and safest way to do this myself. 4. I also get the feel the depth of field based on chosen aperture is often not as deep as I'm expecting e.g even f11 to 16 is not giving me most in focus. I'm assuming the lens correctly stops down on the x-e2 to the chosen aperture? Would this be a correct assumption? While I'd like the focus ring to be accurately callibrated, I'd not be so worried if I merely checked focus through the viewfinder or on screen and got correct focus. Any help getting this combo to work well would be appreciated. I already enjoy the portrait possibilities of the lens but would like to be confident in using it more broadly. thanks