This is not 5x Barlow lens. It magnify just 2x. One photo was made with this lens and another without it. The quality is not high cause of snowing. Telescope Celestron 114eq, camera Olympus E-M10 The lens is made of glass, not plastic, but I have no see anti-reflection (AR) coating on it Be patient! It is not M42 thread for many cameras! A lot of cameras use m42x1 thread but this is M42x0,75 is T-MOUNT (Why they named it T-ring???)
Works fine, but difference with my 2x Barlow is minimal