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Lensing in a spherically symmetric and static spacetime is considered, basedon the lightlike geodesic equation without approximations. After fixing tworadius values r_O and r_S, lensing for an observation event somewhere at r_Oand static light sources distributed at r_S is coded in a lens equation that isexplicitly given in terms of integrals over the metric coefficients. The lensequation relates two angle variables and can be easily plotted if the metriccoefficients have been specified; this allows to visualize in a convenient wayall relevant lensing properties, giving image positions, apparent brightnesses,image distortions, etc. Two examples are treated: Lensing by aBarriola-Vilenkin monopole and lensing by an Ellis wormhole.Comment: REVTEX, 11 pages, 12 eps-figures, figures partly improved, minor  revision

Exact gravitational lens equation in spherically symmetric and static spacetimes