  We present the results of extended theoretical LDA+DMFT calculations for a
new iron-pnictide high temperature superconductor NaFeAs compared with the
recent high quality angle-resolved photoemission (ARPES) experiments on this
system [1]. The universal manifestation of correlation effects in
iron-pnictides is narrowing of conducting bands near the Fermi level. Our
calculations demonstrate that for NaFeAs the effective mass is renormalized on
average by a factor of the order of 3, in good agreement with ARPES data. This
is essentially due to correlation effects on Fe-3d orbitals only and no
additional interactions with with any kind of Boson modes, as suggested in [1],
are necessary to describe the experiment. Also we show that ARPES data taken at
about 160 eV beam energy most probably corresponds to $k_z=\pi$ Brillouin zone
boundary, while ARPES data measured at about 80 eV beam energy rather
represents $k_z=0$. Contributions of different Fe-3d orbitals into spectral
function map are also discussed.
