  In this work we propose a new numerical method to evaluate the critical
point, the susceptibility critical exponent and the correlation length critical
exponent of the three dimensional Ising model without external field using an
algorithm that evaluates directly the derivative of the logarithm of the
probability distribution function with respect to the magnetisation. Using
standard finite-size scaling theory we found that correction-to-scaling effects
are not present within this approach. Our results are in good agreement with
previous reported values for the three dimensional Ising model.
