chriscane

I would like to use a Leica 40mm F2 lens on my Fuji Xe1. When focusing the image is sharp in the viewfinder, however when I lightly touch the shutter button the image gets blurred. Has anyone else experienced this phenomenon? Is there some special setting I need to use? I have done all the usual settings - set to manual - Lens type to 35mm, as it is the closest etc. Would value any help.