Unfortunately I unangenehem things are noticed in this part: The clamping screw holding the eyepiece not tight enough. In addition, a lot of game in the eyepiece, with a piece of duct tape you can clean up the but. She also produced a bluish image where selling fast after 4 lenses 3X Barlow is to see no color cast. Thus returned and a 4 lens part by about 90 - bought