Quote Watsisname (

)
For Sirius B, massing ~1.4 solar masses and with a radius of ~7700km (about the mass of the Sun in about the volume of the Earth, as with most white dwarfs), this equation tells us that the deflection angle of a photon skimming its surface will be about 1x10-3 radians, or 0.06° (3.7 arcmin).
Does SE actually use these calculations? The gravity lensing around white dwarfs looks far stronger than that figure would indicate. Sirius B has an Einstein ring quite a distance from the surface when seen up close.