  We present a correlation function analysis for the catalogue of photometric
redshifts obtained from the Hubble Deep Field image by Fernandez-Soto et al.,
1998. By dividing the catalogue into redshift bins of width $\Delta z=0.4$ we
measured the angular correlation function $w(\theta)$ as a function of redshift
up to $z\sim 4.8$. From these measurements we derive the trend of the
correlation length $r_0$. We find that $r_0(z)$ is roughly constant with
look-back time up to $z \simeq 2$, and then increases to higher values at
$z\simgt 2.4$. We estimate the values of $r_0$, assuming
$\xi(r,z)=(r/r_0(z))^{-\gamma}$, $\gamma=1.8$ and different geometries. For
$\Omega_0=1$ we find $r_0(z=3)\simeq 7.00\pm 4.87 h^{-1}$ Mpc, in good
agreement with the values obtained from analysis of the Lyman Break Galaxies.
