Absolute neutron capture cross sections for natural elements of scandium, titanium, rubidium, molybdenum, iodine, cesium, cerium, praseodymium, holmium, lutetium, and gold, and separated isotopes of 190Os, 192Os, 194Pt, and 238U are measured in the 0.5- to 3.0-MeV energy range. For most of these nuclides and isotopes, experimental data are scarce and discrepant, especially for rubidium, 133Cs, cerium, lutetium, and 194Pt, where no data are available above 0.6 MeV. Gamma-ray spectra emitted in the capture of 0.5-MeV neutrons, as well as the multiplicity of the gamma-ray transitions, are presented.