Photographic emulsions of enhanced sensitivity and reduced contrast

An emulsion of enhanced photographic sensitivity and reduced contrast comprised of

• a dispersing medium and
• tabular grains containing greater than 50 mole percent bromide, based on silver, and having a non-uniform iodide distribution, including
• (a) a peripheral zone extending inwardly from edges and corners of the tabular grains and providing (i) a maximum iodide concentration along the edges and (ii) a lower iodide concentration at the corners than elsewhere along the edges,
• (b) a central zone providing a minimum iodide concentration and accounting for at least 35 percent of total silver forming the tabular grains and,
• (c) extending from the central zone to the peripheral zone, an intermediate zone (i) containing a higher iodide concentration than the central zone, ranging from greater than 2 to 10 mole percent, based on silver forming the intermediate zone, and (ii) accounting for from 5 to 35 percent of total silver forming the tabular grains.