DESC: The silver Sunpak PZ40MS is a powerful, full-featured, lightweight, shoe-mount electronic flash unit for Minolta digital and film cameras with TTL dedicated configurations. It will also work manually with cameras having a non-dedicated, single-contact hot shoe. It is 40% smaller and significantly lighter than previous flash units with the same features and power output, with an impressive ISO 100 guide number of 102 at the 50mm zoom setting.