Used Bronica ETRS 120 Back - As Is *Missing Dark Slide*

Compatible With

• Bronica ETR, ETRS, and ETRSi series cameras using interchangeable 120 film backs

About This 120 Film Back

The Bronica ETRS 120 Back is a modular film magazine made for the Bronica ETR-series 6x4.5 medium format system. It allows photographers to load 120 roll film into a removable back, making it easy to switch between film types, ISOs, or partially exposed rolls during a session. For studio, portrait, wedding, and fine art photographers working with classic Bronica cameras, an extra film back can be an especially useful accessory.

System Benefits

One of the biggest advantages of the Bronica ETR platform is its interchangeable film-back design. Instead of finishing an entire roll before changing film stock, users can swap backs and continue shooting with a different emulsion. This makes the system practical for photographers who want to alternate between color negative, black-and-white, or slide film while maintaining the handling and image quality benefits of a medium format camera.

The 120 back is intended for standard 120 roll film and produces 6x4.5cm format images, offering a balance of negative size and roll capacity that made the ETR system a longtime favorite among professionals and serious enthusiasts.

Important Condition Notice

This item is a used accessory with SKU prefix UIX, which indicates As Is condition. Equipment rated As Is may or may not be in working condition and may have dents, scratches, cracks, missing parts, or require repair. This particular unit is specifically noted as missing the dark slide, which is an essential component for safe removal and exchange of the film back during use. Because of that missing part, this back should be purchased with the expectation that it may be best suited for parts, repair, or for buyers already familiar with servicing Bronica accessories.

As Is items are sold without a 180-day warranty and are non-returnable. If you need a fully ready-to-use back, you may want to verify whether a replacement dark slide and any additional service are required before purchase.

Why the Dark Slide Matters

On interchangeable medium format film backs, the dark slide is used to block light from reaching the film plane when removing the back from the camera body. Without it, the back generally cannot be safely detached while film is loaded, and operation may be incomplete depending on the camera and back configuration. Since this unit is missing that piece, functionality should not be assumed.

Who This Is For

This accessory is best suited for Bronica ETR users looking for a donor part, a restoration project, or a back to complete a vintage system at low cost. It may also appeal to camera technicians, collectors of classic Bronica gear, or experienced film shooters who already have spare system components.

Bronica ETR System Background

The Bronica ETR line became well known for bringing modular medium format photography to photographers who wanted professional features in a relatively compact package. With interchangeable finders, lenses, grips, and film backs, the ETR system offered flexibility comparable to more expensive medium format platforms. The 6x4.5 format also provided more frames per roll than larger 6x6 or 6x7 systems, making it practical for event, editorial, and portrait work.

Usage Notes

If you are considering this back for practical use, confirm compatibility with your specific Bronica ETR-series body and inspect whether the insert, rollers, seals, latch, frame spacing mechanism, and counter operation meet your needs. Because this unit is sold As Is and lacks the dark slide, it should be treated as untested or incomplete unless you are prepared to source parts and evaluate it yourself.

Recommended Accessories

Common accessories for Bronica ETR users include additional 120 film inserts, replacement dark slides, waist-level or prism finders, standard and telephoto Zenzanon lenses, neck straps, handheld meters, and fresh rolls of 120 film. A protective case or padded insert is also recommended when storing vintage film accessories.