Sunpak Auto 555
Handle mount (hammerhead). There exists dedicated TTL hot-shoe connectors for a number of systems, but they are for film SLRs and do not work with DSLRs. For all intents and purposes this is a generic flash unit when used on a DSLR. For connecting to a DSLR, the best option is the Sunpak #1743 10" PC Cord (3-prong household to PC-male cord).
Auto range is 7 stops (f/1.4 to f/11 @ ISO 100).
Rebadged as model G4500DX in some markets.
Head: Fixed 35mm coverage.
Swivel & tilt: -180° to +150° swivel, 0° to +90° tilt.
Exposure modes: Auto, Varipower.
Manual settings: 1/1 to 1/64 in 1/1 EV steps (7 steps).
No built-in wireless modes.
Features: Sync. socket, Ext. power, Hammerhead, Strobist.
Trigger voltage: 6 volt.
Flash duration: 1/450 sec. @ 1/1 (full output).
Field upgradable: No.
Dimensions: 102 x 255 x 100 mm, 680 g.
Guide number (ISO 100, meter): 45.
For a detailed explanation of the above specifications, see the guide.
- Download manual from www.cameramanuals.org.
Sunpak's main business is the planning, development, production and sale of aftermarket electronic flash units. The company also markets general underwater imaging equipment.
Some Sunpak flash units have an auto power save function that may put the unit to sleep after about some time of inactivity (from 5 to 15 minutes, depending on model). When using your flash as a wireless slave, the power save mode may stop the flash from responding after a while. If the manual does not tell you how to disable automatic power save, it may work to hold down the mode and select (SEL) buttons as you power it on, or to hold down the zoom button as you power it on.
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