The canon ef 200mm f/2l is usm lens is being reviewed by various outlets, with some comparing it to other lenses such as the laowa 200mm f/2 af and sigma 200mm f/2 dg os sports. Some reviews highlight the canon lens's potential for portrait photography. The relative quality and value of these lenses are being discussed, with some outlets questioning whether the sigma or laowa options can match or surpass the canon lens.