Multiplicative detection bias μ_det as a function of the width of the filter used in the detection step for galaxies with 20 < m_AUTO < 24.5. The blue (red) points correspond to μ₁ (μ₂). The histogram shows the distribution of corresponding sizes based on the half-light radius of the galaxies, suggesting that a width of 2 − 3 pixels is best. The bias increases quickly for larger values of σ_filter.