Sunpak Auto 321 Electronic Flash

Sunpak’s Auto 321 Electronic Flash brings dependable, cost-effective flash power to 35mm SLR photography, using a straightforward auto/manual switch and ASA speed and f-stop scale to give film shooters TTL-era flash exposure control without the expense of a manufacturer-branded strobe. Long favored by collectors and working photographers alike for its rugged build quality, the Auto 321 is part of Sunpak’s well-regarded lineup of shoe-mount flashes from the film era, prized for reliability that has kept many units in working condition decades after production.

The flash mounts to a camera’s hot-shoe or connects via a separate sync cord and accessory shoe, making it compatible with a wide range of film SLR bodies as well as select DSLRs that are trigger-voltage compatible when used in manual mode. Its automatic exposure mode reads the flash-to-subject distance in conjunction with the set ASA speed and f-stop to deliver consistent, properly exposed flash output without requiring manual calculation for every shot, while full manual mode gives experienced users direct control over flash power for more deliberate lighting setups.

Power comes from 4 standard AA batteries, keeping the unit affordable and easy to keep running in the field, and an optional AC adapter accessory allows for continuous studio-style use without cycling through batteries during extended shooting sessions. Its no-frills, all-manual design reflects the mechanical simplicity and dependability that made Sunpak a trusted name in flash photography throughout the film era.

Specifications:

– Model: Auto 321
– Type: Shoe-mount electronic flash
– Camera compatibility: Film SLR (manual mode compatible with trigger-voltage compatible DSLRs)
– Exposure modes: Auto and Manual
– Controls: ASA speed set, f-stop scale, auto/manual switch
– Connection: Hot-shoe or accessory shoe with sync cord
– Power source: 4x AA batteries (AC adapter compatible)
– Zoom: Manual
– Color: Black