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2026-10-06 - Sunpak Auto 24 Electronic Flash

 

The Sunpak Auto 24 Electronic Flash is a compact hot-shoe electronic thyristor flash unit featuring an adjustable bounce head and an integrated PC sync cord. Made in Japan and released in 1977, it delivers reliable automatic and manual flash exposures.

Key Features:

  • Guide Number: 24 at ISO 100 providing solid light output for close to medium-range subjects.
  • Power Options: Requires 4 AA batteries for standard portable shooting, or the dedicated AC power adapter bypasses the battery compartment for continuous power during studio or indoor shoots.
  • Exposure Modes: Features two auto-aperture exposure settings (colour-coded on the calculator dial) which rely on a built-in thyristor sensor to automatically cut off flash duration, plus a full-power manual mode.
  • Mounting & Connectivity: Features a standard 1-pin universal hot-shoe mount along with an integrated PC sync cord for cameras lacking hot-shoe contacts.
  • Adjustable Operation: Features a swiveling foot / tilting head mechanism allowing it to sit horizontally or vertically.
  • Weight: Roughly 185 grams (without batteries)


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