Film critic Mark Kermode argued that 3D adds "not that much" value to a film, and said that, while he liked "Avatar", the many impressive things he saw in the film had nothing to do with 3D. Kermode has been an outspoken critic of 3D film describing the effect as a "nonsense" and recommends using two right or left lenses from the 3D glasses to cut out the "pointy, pointy 3D stereoscopic vision", although this technique still does not improve the huge brightness loss from a 3D film. Versions of these "2-D glasses" are being marketed.