Comment on "Guiding, Focusing, and Sensing on the Subwavelength Scale Using Metallic Wire Arrays"

This is a comment on “Guiding, Focusing, and Sensing on the Subwavelength Scale Using Metallic Wire Arrays” by G. Shvets, S. Trendafilov, J. B. Pendry and A. Sarychev published in Phys. Rev. Lett. 99, 053903 (2007), which demonstrates that the endoscope proposed in the letter does not demonstrate satisfactory subwavelength imaging performance.