Photographic element exhibiting improved speed and stability

A photographic element comprising a support and a silver halide emulsion layer, wherein said emulsion layer contains a photographically effective amount of a thiosulfonic acid compound, a sulfinic acid compound, and an alkynylamine;

• and wherein said emulsion layer is comprised of silver halide grains which are predominantly silver chloride, and which internally contain a photographically effective amount of a dopant comprised of a nitrosyl or thionitrosyl ligand and a transition metal chosen from Groups V to X, inclusive, of the periodic table.

A method of improving the sensitivity and stability of a silver halide emulsion comprising adding to said emulsion a photographically effective amount of an organic compound having a thiosulfonic acid substituent, an organic compound having a sulfinic acid substituent, and an alkynylamine.