Abstract: A sensitized gelatino-silver halide emulsion comprising a supersensitizing combination of at least one sensitizing dye represented by general formula I: ##SPC1##wherein R.sub.1, R.sub.2 and R.sub.3 are each a member selected from the group consisting of an alkyl having up to 6 carbon atoms and a substituted alkyl group having up to 6 carbon atoms, at least one of R.sub.1, R.sub.2 and R.sub.3 being a substituted alkyl group having a sulfo group therein; R.sub.4 is a hydrogen atom or forms an alkylene linkage together with R.sub.2 ; Z.sub.1 is an atomic group necessary for completing a benzimidazole nucleus; A.sub.1 and A.sub.2 are each a member selected from the group consisting of a hydrogen atom, a phenyl group, a halogen atom, a carboxyl group, an alkoxy carbonyl group, an alkyl group, an alkoxyl group, a hydroxyl group, a trifluoromethyl group, and a cyano group, A.sub.2 being capable of condensing with A.sub.1 or A.sub.3 to form a benzene nucleus; and A.sub.