Table of Contents
Advertisement
SPECIFICATIONS
SPEEDLITE577G
Type: Electronic computer flash with a series control
system.
Attachment; By Canon One-Touch Bracket.
Synchronization: By direct contact in separate sensor
unit which mounts in camera's hot shoe. Tightened
by lock nut.
Guide Numbers:
48 (ASA 100, m), 80 (ASA 25, ft) without any adapter
28 (ASA 100, m), 46 (ASA 25, ft) with Wide Adapter
577G-24
24 (ASA 100, m), 40 (ASA 25, ft) with Wide Adapter
577G-20
63 (ASA 100, m), 100 (ASA 25, ft) with Tele Adapter
577G
Reached after pilot lamp lights up when new bat¬
teries are loaded.
Flash Coverage: For 35mm format, covers an angle of
view of
35mm lens without adapters,
24mm lens with Wide Adapter 577G-24,
20mm lens with Wide Adapter 577G-20,
100mm lens with Tele Adapter 577G.
Recycling Time:
Alkaline-Manganese batteries: About 0.2-18 sec.
after ten firings when the batteries are new.
Ni-Cd batteries: About 0.2-7 sec. after ten firings
when the batteries are fully charged.
Recycling time means interval between firing on flash
and relighting of piiot lamp with new or fully-
charged batteries.
Number of Flashes:
Alkaline-Manganese
batteries:
About
100-1000
times allowing 30 sec. between each firing.
Ni-Cd batteries: About 75-750 times allowing 30 sec.
between each firing.
Number of flashes is counted when the flash Is fired
in 30 sec. intervals with new or fully-charged bat¬
teries.
Color Temperature; Same as that of daylight.
Flash Duration; 1/400-1/50,000 sec.
Flash Control System: The sensor measures the light
reflected back from the subject and automatically
cuts flash output when subject has had enough.
Series control system saves unused energy for next
firing.
Metering Sensitivity Pattern: Even distribution over
entire area for average measurement.
Auto Flash System: Selection of three color-coded
positions (red, green, yellow) with corresponding
35
Advertisement
Table of Contents
