Specification – Pentax 300X User Manual
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SPECIFICATION
Type
Connection
Guide Number
Flash Duration
Angle of Coverage
Recycle Time
Light Quality
Number of Flashes
Light Control
Selection of Apertures
Automatic Flash Range
Bounce Flash
Power Source
Film Speed
Aperture Scale
Series-circuitry computer flash.
Hotshoe and clip-on type with safety lock.
30 (ISO/ASA 100 m) with new batteries, 30 seconds after the neon lamp turns on.
Guide number for bounce flash: 25 for main light, 6 for sublight.
1/1,000 ~ 1/30,000 sec.
Covers the view angle of a 35 mm lens (35 mm format); with wideangle adapter
attached, covers the view angle of a 28 mm lens (35 mm format).
9 sec. after lighting of the neon lamp with new alkaline-manganese batteries.
Daylight type.
150 with fresh alkaline-manganese batteries.
Silicon photocells and thyristor circuit.
Manual and three-step automatic apertures (yellow, red, green).
Aperture setting for ISO/ASA 100: Red f/2.8. Green f/5.6. Yellow f/11
Red : 1.5 ~ 10.7 m (5 ~ 35 ft)
Green : 1 ~ 5.3 m ( 3 . 3 ~ 1 8 ft)
Yellow : 0.8 ~ 2.7 m ( 2 . 6 - 9 ft)
Flash head tiltable 0 ~90°; when tilted, a sublight switches on and the flash is
set up for twin-light bounce flashing.
Four penlight batteries (AA size)
ISO/ASA 25 400
f/1.4 ~ f/32
Notice: Specifications are subject to change without notice.
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