The RCA PR-25 16mm Optical Sound Camera from the 1930s is a rare and historically significant piece of cinema technology, with only 50 units ever produced. Designed for 16mm film, this camera incorporates optical sound recording, allowing synchronized audio to be captured directly onto the film strip—a major innovation for its time.
Historical Background:
- Introduced in 1934, five years after Hollywood’s transition to sound films.
- Marketed toward amateur filmmakers, making synchronized sound recording more accessible.
- Used a variable area soundtrack, where sound waves were recorded as variations in light intensity on the film.
- The sound recording system relied on a small battery-operated lamp projecting light onto a mirror attached to a diaphragm, which vibrated in response to sound.
- Once developed, the film could be played back on RCA’s sound projector, which had been released a few years earlier.
- Production was limited, with fewer than 50 units made, and development was halted due to World War II.
Key Features:
- Model: RCA PR-25
- Frame Rate: Operates at 24 frames per second, meeting professional cinema standards.
- Lenses: Includes two C-Mount lenses (15mm and 25mm) for versatile focal length options.
- Built-in Finder: Provides precise composition without requiring an external viewfinder.
- Film Capacity: 100-foot daylight load, allowing easy film changes without a darkroom.
- Built-in Motor: Ensures reliable film movement, eliminating the need for manual winding.
Availability & Sale Details:
For those interested in acquiring this rare piece of cinema history, the RCA PR-25 16mm Optical Sound Camera is currently available for sale on eBay.
- Condition: For parts or not working—this camera is complete but untested and appears to be in good condition.
- Returns & Exchanges: No returns, no exchanges. Sold strictly as a collector’s piece.
- Accessories: No amplifier, microphone, or cables included.
- Photo & Video Verification: The listing includes typical photos of multiple units in stock. Before shipment, updated photos and a video will be sent for buyer approval.
You can view the listing at this link.
