Super-resolution imaging using a three-dimensional metamaterials nanolens has been recently reported [B. D. F.
Casse et al. Appl. Phys. Lett. 96, 023114 (2010)]. This nanolens, consisting of bulk gold nanowires embedded
in alumina template, can transport with low-loss object details down to λ/4 (λ, wavelength) length scales, over
significant distances of the order of 6λ. Here, we present validation of the super-resolution imaging by the nanolens
through extensive control experiments. We also analytically show that the nanowire array medium supports a
quasi transverse electromagnetic mode (TEM) with flat isofrequency contours, which is a requirement for super-resolution
imaging. We numerically compute the optical transfer function to quantify the imaging quality of
the lens and show that the theoretical resolution of this nanolens is λ/5. Additionally, we demonstrate the
broadband nature of the lens in the spectral region 1510 nm to 1580 nm. Finally, imaging of a large object
(~ 52λ in diameter), with subwavelength features, is presented.