Photographic material containing silver halide grains doped with hexa-coordinated cyano-complex

A silver halide photographic material which comprises a support and a light-sensitive layer provided thereon, said light-sensitive layer containing silver halide grains dispersed in gelatin,

• wherein a hexa-coordinated cyano-complex is doped in the silver halide grains under conditions that the amount of the complex is in the range of 1.times.10.sup.-7 to 5.times.10.sup.-3 mol based on 1 mol of silver halide and a localized phase of the complex is present in the surface of the grains, said localized phase containing the complex in an amount of 1.times.10.sup.-5 to 1.times.10.sup.-1 mol based on 1 mol of silver halide, and said complex being a salt containing a hexa-coordinated transition metal complex anion represented by the formula (I):
• [M(CN).sub.6 ].sup.n- (I)
• wherein M is a transition metal selected from those consisting of metals of the VA, VIA, VIIA and VIII groups of the fourth, fifth and sixth periods in the periodic table, and n is 3 or 4, and
• wherein the silver halide grains are doped in the presence of a water soluble compound having a function of inhibiting a reaction of the cyano-complex with gelatin, said compound being used in an amount of 4.times.10.sup.-3 to 1 mol based on 1 mol of silver halide.