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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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