The first delivered spotting scope had not centrally located optical axis. (Probably the prisms were set incorrectly.) - Decreased! - 2. In the spotting scope super fast supplied by Amazon, the optical axis is ok, but the zoom eyepiece can be adjusted only by 20-35x, ie approximately 35-60x is no change (the exit pupil) to identify more! I retain the part but still, since in such simple eyepieces magnification over 40x is not anyway to use it. Otherwise, a bright, clear and sharp image!
