  We present a next-to-leading order (NLO) QCD analysis of unpolarized and
polarized deeply virtual Compton scattering (DVCS) amplitudes, for two
different input scenarios, in the $\bar{MS}$ scheme. We illustrate and discuss
the size of the NLO effects and the behavior of the amplitudes in skewedness,
$\zeta$, and photon virtuality, $Q^2$. In the unpolarized case, at fixed $Q^2$,
we find a remarkable effective power-law behaviour in $\zeta$, akin to Regge
factorization, over several orders of magnitude in $\zeta$. We also quantify
the ratio of real to imaginary parts of the DVCS amplitudes and their
sensitivity to changes of the factorization scale.
