Silver halide photographic material

A negative silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer comprising a silver halide emulsion comprising regular silver halide grains containing from 0.3 mol % to 3.0 mol % of silver iodide, said silver halide grains being produced by conversion of silver halide host grains using high silver iodide silver halide grains comprising silver iodide, silver iodobromide, silver iodochlorobromide or silver iodochloride having a silver iodide content of at least 90 mol % in an amount sufficient to provide from 0.1 mol % to 2.5 mol % of silver iodide based on the total silver halide content of the silver halide host grains and the high silver iodide grains, said silver halide host grains comprising silver bromide or silver iodobromide having a silver iodide content of at most 2.5 mol % and a mean grain size of at most 0.7 .mu.m, wherein said conversion is performed in the presence of a compound represented by formula (A):

• ##STR34## wherein Z.sub.11 and Z.sub.12, which may be the same or different each represents an atomic group necessary for forming a thiazole nucleus, a thiazoline nucleus, a benzothiazole nucleus, a naphthothiazole nucleus, an oxazole nucleus, a benzoxazole nucleus, an oxazoline nucleus, a naphthozazole nucleus, an imidazole nucleus, a benzimidazole nucleus, an imidazoline nucleus, a selenazole nucleus, a selenazoline nucleus, a benzoselenazole nucleus or a naphthoselsenazole nucleus;
• R.sub.11 and R.sub.12, which may be the same or different, each represents a substituted or unsubstituted alkyl group, provided that at least one of R.sub.11 and R.sub.12 comprises a sulfo group or a carboxy group;
• L.sub.11 and L.sub.12 each represents a substituted or unsubstituted methine group;
• and n is from 0, 1 or 2.