Manual Flash Calculator Professional provides a handy utility for accurately determining flash-subject distance.
It's quick and easy to use for tricky lighting situations where TTL auto-flash can often struggle.
This app requires no special device permissions.
• Aperture range F/1.2 to F/22
• ISO range ISO50 to ISO6400
• Flash output ratios to 1/256 power
• Flash exposure compensation to 5 EV
• Unlimited number of flash configurations
• Zoom support for unlimited guide settings
• Power increments in 1/3, 1/2 or Full stops
• Macro closeup distances (in and cm)
• Pre-loaded with popular flash models
Set the guide number/zoom coverage, power-ratio limit, power adjustment interval, and guide number units for each of your flash units. (You can find this information from the guide number table in your flash user manual). Configure an unlimited number of flash units and save them for quick and easy use.