Application of the SLIT algorithm to a simulated lensing system in the simple case where there is no light from the lensing galaxy. Left: simulated source is shown on the top while its lensed and noisy counterpart is shown on the bottom. Both include a PSF convolution. Middle: source recovered with the SLIT algorithm and its lensed counterpart. We note that both are still convolved with the PSF. Right: difference with the true source (top) and the residuals in the lens plane (bottom). The original and reconstructed images are displayed with the same colour cuts. The residuals in the bottom right panel are shown with ±5σ cuts.