A silver halide photographic light-sensitive material is disclosed which is decreased in variation of light-sensitivity caused by a change in environmental humidity and a prolonged storage of the photographic material. The photographic material comprises a support and photographic component layers including at least one silver halide emulsion layer in which the silver halide emulsion layer contains a compound selected from the group of the compounds represented by the following formulas [I], [II], [III], [IV] or [V], and at least one of the photographic component layer is added with inorganic sulfur; ##STR1##

A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support having thereon a red-sensitive silver halide photographic emulsion layer comprising a tetramethine melocyanine dye represented by the general formula (I) and a compound represented by the general formula (II) ##STR1## the substituents within these structural formulae are defined within the specification. The material gives improved results with respect to preventing diffuse sensitization. The material also provides a red-sensitive silver halide photographic emulsion in which a decline of spectro-sensitivity in the lapse of dissolution is relatively small and which has a small amount of dye fog.

A silver halide photographic light-sensitive material spectrally sensitized in an infrared region is described. The silver halide photographic light-sensitive material has at least one silver halide photographic emulsion layer containing at least one infrared-sensitizing dye represented by the following general Formula (I): ##STR1## wherein R.sub.1, R.sub.2, R, D, Z, Z.sub.1, X, and n are as described in the specification; and at least one compound represented by the following general Formula (II): ##STR2## wherein Z.sub.2, R.sub.6, R.sub.7 and X.sub.1 are described in the specification. The silver halide photographic light-sensitive material has improved sensitivity in an infrared spectral region and improved preservability.

5-substituted-1,2,3,4-thiatriazoles have been found to be supersensitizers for silver halide photographic emulsions spectrally sensitized to the infrared.

A silver halide color photographic material is described, comprising a support having provided thereon at least one silver halide emulsion layer, wherein said at least one silver halide emulsion layer comprises at least one compound represented by the formula (I) and at least one compound represented by the formula (II): ##STR1## wherein V.sub.1, V.sub.2, V.sub.3 and V.sub.4 each represents a hydrogen atom, a halogen atom, an alkyl group, an acyl group, an acyloxy group, an alkoxycarbonyl group, a carbamoyl group, a sulfamoyl group, a carboxy group, a cyano group, a hydroxy group, an amino group, an acylamino group, an alkoxy group or an aryl group, or V.sub.1 and V.sub.2, or V.sub.3 and V.sub.4 may be bound to each other to form a benzene ring; R.sub.1 and R.sub.2, which may be the same or different, each represents an alkyl group and may optionally form a salt with a metal atom or other organic compound; X.sup..crclbar. represents an anion; and l represents 0 or 1 or, when the dye forms an inner salt, l represents 0; ##STR2## wherein D represents a divalent aromatic moiety; R.sub.3, R.sub.4, R.sub.5 and R.sub.6 each represents a hydrogen atom, a hydroxy group, an alkoxy group, an aryloxy group, a heterocyclic group, a mercapto group, an alkylthio group, an arylthio group, a heterocyclylthio group, an amino group, an alkylamino group, a cyclohexylamino group, an arylamino group, a heterocyclylamino group, an aralkylamino group or an aryl group; Y.sub.1 and Y.sub.2 each represents --N.dbd. or --CH.dbd.; and Z.sub.1 and Z.sub.2 each represents --N.dbd. or --CH.dbd.; further at least one of Y.sub.1 and Z.sub.1 is --N.dbd., and at least one of Y.sub.2 and Z.sub.2 is --N.dbd..