Photographic element.

摘要

A photographic element is disclosed comprising a support having thereon a silver halide emulsion layer spectrally sensitized with (a) a first sensitizing dye according to the formula: wherein Z1 and Z2 each independently represents the atoms necessary to complete a substituted or unsubstituted 5- or 6-membered heterocyclic nucleus, R1 and R2 each independently represents substituted or unsubstituted alkyl or substituted or unsubstituted aryl, R3, R4, R5, and R6 each independently represents hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, and X represents a counterion, and (b) a second sensitizing dye having a maximum sensitivity at a wavelength of 5 to 100 nm less than the wavelength of maximum sensitivity of the first sensitizing dye. r