Sunpak MZ-440AF Flash for Pentax AF Cameras, Guide Number 131 ISO 100 ft.

Auto TTL flash functions for Nikon, Canon, Minolta and Pentax camera systems ° Detented zoom selector settings for 28mm, 35mm, 50mm and 85mm focal lengths ° Flash head can be bounced and swiveled for increased lighting control and creative effects ° Four detented tilt selector settings from 0 to 90 ° Easy to read display panel has distance readouts in both feet and meters, lens selector setting, ISO selector, flash confirmation light, ready lamp and test button ° Slide on reflector panel and 20mm ultra wide angle filter are standard ° Guide number 131 (ft) at 50mm lens setting (ISO 100).