This grang angle converter is of very good optical quality and a very useful complement to a camcorder Sony HDR-XR550VE. It greatly facilitates shooting in small rooms and gives more to film landscapes. No significant image distortion when shooting at normal height but it gives the opportunity to distort images and plunged in against-dived to give the effect of flowing lines intéressant.Il also enables shooting as self-Antoine Maximy at arms length. It binds readily with the thread. Furthermore infrared télécommange easily control the camera to the rear but more difficult from the front. Shame there is not a rectangular visor if it is not desired reflections. But we just play with lens effect when the sun is relatively Front and gives good shots with colorful spots and sunlight. No possibility to set filters because it does not have thread. It is a product that I recommend much more useful and better quality at shooting the TV from the same brand.