Vintage Sunpak Auto 433 D Thyristor Shoe Mount Flash for Canon Film SLR Tested For Sale

Vintage Sunpak Auto 433 D Thyristor Electronic Flash Unit for Canon 35mm Film SLR Cameras — Tested & Working

A vintage Sunpak Auto 433 D Thyristor shoe-mount electronic flash unit with dedicated Canon hot shoe module. Built with an energy-saving auto thyristor circuit, variable manual power controls (Full down to 1/16 power), and a tilting bounce flash head (0° to 90°). Compatible with classic 35mm Canon film SLR bodies such as the AE-1, A-1, AV-1, AT-1, and F-1 series.

Key Highlights:

• Dedicated Canon Hot Shoe: Features specialized Canon pin contacts on the base foot for integrated exposure operation.

• Adjustable Bounce Head: Head swivels upward up to 90 degrees with clearly marked angle indicators for soft bounced lighting.

• Variable Power & Auto Thyristor: Features manual power output selection (Full, 1/2, 1/4, 1/8, 1/16) and dual auto aperture modes.

Technical Specifications:

• Brand: Sunpak

• Model: Auto 433 D Thyristor (Dedicated for Canon)

• Compatibility: Canon 35mm Film SLR Cameras

• Mounting: Hot Shoe with Dedicated Canon Contacts (\"CA\")

• Bounce Angle: 0°, 15°, 30°, 45°, 60°, 75°, 90°

• Power Options: 4x AA 1.5V Batteries, AC, or HV Power Input

• Estimated Era: Circa late 1970s – 1980s

• Country of Manufacture: Japan

Condition:Pre-owned vintage camera condition — Tested & Working.

• Operation: Tested with batteries; charges, ready light illuminates, and test flash fires correctly.

• Housing & Plastics: Black plastic casing exhibits light superficial scuffs and minor handling marks. Clear flash window lens is clean and crack-free.

• Battery Contacts & Mount: Battery compartment and hot shoe contacts are clean and free of corrosion.