[en] Isotopically resolved cross sections and velocity distributions have been measured in charge-pickup reactions of 1 A GeV ²⁰⁸Pb with proton, deuterium and titanium target. The total and partial charge-pickup cross sections in the reactions ²⁰⁸Pb + ¹H and ²⁰⁸Pb + ²H are measured to be the same in the limits of the error bars. A weak increase in the total charge-pickup cross section is seen in the reaction of ²⁰⁸Pb with the titanium target. The measured velocity distributions show different contributions - quasi-elastic scattering and Δ-resonance excitation - to the charge-pickup production. Data on total and partial charge-pickup cross sections from these three reactions are compared with other existing data and also with model calculations based on the coupling of different intra-nuclear cascade codes and an evaporation code. (orig.)