  We generalize previous studies on constraining operators of the Standard
Model Effective Field Theory using Drell-Yan (DY) measurements to include at
the same time all relevant operators and uncertainties. It has been shown that
fully differential measurements (triple differential for neutral and double
differential for charged) are more sensitive to EFT effects. Nevertheless, due
to the finite statistics, the fully differential measurements sacrifice some
statistical power on the shape (less invariant mass or transverse momentum
bins) in favour of more kinematic variables. We show that when the observables
are particularly sensitive to the shape of the distributions, such as the
invariant mass of the two leptons in neutral DY, the single differential
measurement with more bins, may be as sensitive as the fully differential one,
at least for specific EFT operators. This suggests to always supplement fully
differential analyses with projections into the relevant distributions
evaluated with finer bins.
