I have a Pentax 65 with 20x ~ 60x eyepiece. Its a stunning scope and I am desperate to capture images through it. So going out on a limb, I bought a second hand Fujinon XT1 and a 35mm lens. This lens has the same filter thread as the Pentax eyepiece, so that the camera mount3 straight on to the scope - see image below. I get very little vignetting with the aperture set to 4.0. The problem is focusing, because you need to focus the scope to the subject and the camera to the scope. It would seem that focussing the scope without the camera on, and then gently adding the camera back on and focussing manually using the Fuji's 'focus assist' can produce results. Maybe there's a better way. The images also seem quite hazy and I have to post edit to increase the contrast. I think there's an optical issue with this arrangement. Maybe too much glass. Anyone care to comment or advise?