Bronica RF645 (2000–2005)

Name: Bronica RF645
Brand: Bronica

The camera weighs 810g. It is dense and built for people who still shoot rangefinders.

Overview

The Bronica RF645 is not a 1950s camera in modern clothes. It is a brand-new medium format rangefinder, designed and released in the 21st century, when most manufacturers had already gone automatic or given up on film. Announced in September 2000 and discontinued by 2005, it was the first entirely new Bronica camera since the GS-1 in 1983. Tamron developed and sold it after taking over the Bronica brand. It was not a nostalgic reissue. It was an attempt to carve out a niche for photographers who wanted a rangefinder but also the image quality of 6x4.5 film.

The target buyers were advanced amateurs stepping up from 35mm, existing medium format shooters, and working professionals who valued discretion and tactile control. The market was dominated by fully automatic systems, but interest in manual rangefinders was quietly coming back. The RF645 offered programmed auto, aperture-priority, and full manual exposure modes. The chassis is magnesium alloy made via Thixomold, a process that gave strength without excess weight. Bronica was saying that mechanical design and electronic assistance could coexist.

Despite its late arrival, the RF645 earned a quiet following. Users describe it as “a super camera” - quiet, well-made, and intuitive. One reviewer noted that few expected to fall for it, yet many did. It handled well, focused smoothly, and gave the kind of image separation that only medium format rangefinders achieve. But it arrived as digital was accelerating and film was retreating, and niche mechanical-electronic hybrids like this were becoming commercially unsustainable. On October 14, 2005, Tamron USA officially announced the discontinuation of the RF645. Multiple sources confirm it was the last Bronica ever made.

Specifications

Manufacturer	Bronica brand, developed and sold by Tamron Co., Ltd.
Country of design	Japan
Product type	Medium format 6x4.5 coupled rangefinder camera with interchangeable lenses
Format	Medium format 6x4.5
Film type	120 roll film, 220 roll film
Mount	Bronica RF645
Shutter type	In-lens leaf shutter
Exposure metering	Through the separate window
Exposure modes	Programmed Auto, Aperture-priority Auto, Manual
Rangefinder	Built-in, combined with viewfinder
Viewfinder	Built-in, combined with rangefinder
Finder magnification	0.6x
Actual rangefinder base	53.5mm
Effective rangefinder base	32.1mm
Bright-line frames	65mm, 135mm
Parallax compensation	Yes
Weight	810g
Dimensions	145.6x107.3x64mm
Lens focal lengths	45mm f/4, 65mm f/4, 135mm f/4.5
Flash sync	The flash will sync at all speeds

Key Features

Magnesium Alloy Thixomold Chassis

The upper casing is magnesium alloy formed using Thixomold, a process that gives high dimensional accuracy and structural rigidity. It was not only about weight, though the 810g result is nicely balanced. It was about precision. Owners report a solid feel that seems engineered rather than assembled, a trait shared with high-end Japanese cameras of the 1980s but rare in the early 2000s.

Manual Film Advance with Ratcheted Option

The film advance is fully manual, a deliberate choice in an era when motor drives were standard. It allows either a full 180-degree stroke or a ratcheted advance, useful for quick partial winding or in tight spaces. It also brings a known problem, the “infamous winding issue.” Multiple user reports confirm the mechanism can become stiff and sometimes refuses to advance at all. It is not universal, but it is frequent enough to be a red flag for buyers. When it works, the advance is smooth and deliberate. When it doesn't, shooting stops.

0.6x Viewfinder with 65mm and 135mm Bright-Line Frames

The combined viewfinder and rangefinder has 0.6x magnification, a compromise between field of view and subject detail. Bright-line framelines are provided for 65mm and 135mm lenses, and they adjust automatically for parallax, so no manual correction is needed. The effective rangefinder base is 32.1mm (from an actual base of 53.5mm), which limits long-lens accuracy. The separate window for exposure metering keeps the viewfinder uncluttered.

In-Lens Leaf Shutter with Full-Speed Flash Sync

Each RF645 lens contains a leaf shutter, so flash sync works at all speeds. That is a big help for outdoor fill flash or studio work, since there is no narrow shutter speed range to stay within when using strobes. The trade-off is that shutter speeds are limited by the lens, not the body, and no specific speed range is documented in the fact sheet. Sync at any speed is still one of the system's strongest technical arguments.

Historical Context

The RF645 came out of a deliberate Tamron strategy to redefine the Bronica line after it took over development and sales. Rather than extend the existing SLR platforms, Tamron went after a new segment: a modern medium format rangefinder. It arrived during a turbulent period for film camera makers, as digital began its ascent. At the same time, a new generation of photographers was rediscovering the tactile and creative benefits of rangefinders. The RF645 was neither a retro throwback nor a digital contender. It was a tool for people who valued precision and quiet operation.

It was also the last. By 2005, Tamron discontinued the model, marking the end of the Bronica brand as a producer of new camera systems. No successor followed. In that sense, the RF645 stands as a final statement: a technically accomplished, beautifully engineered camera that arrived just a few years too late to sustain a product line.

Collectibility & Value

Collectibility is complicated. The manufacturer's repair window closed in 2012, and Tamron no longer performs repairs. Parts availability is reportedly nil, which makes long-term maintenance a gamble. The camera mixes mechanical precision with electronics, so when failures occur they are often difficult to fix. The winding mechanism in particular has a reputation for stiffness and unreliability, with users calling it “the infamous winding issue.”

The fact sheet documents no original MSRP or current market valuation, but one user reported buying a body and 65mm lens kit for $700 in 2010. Functional examples are rare today, and prices vary widely with condition and working order. A CLA (Clean, Lubricate, Adjust) can restore function, and some users report success sending units to third-party repair services like KEH.

Market Value

┌──────────────────────────────────────────────────────────────────────────┐
│ BRONICA RF645                                                   Nov 2026 │
├──────────────────────────────────────────────────────────────────────────┤
│ High      $2,685                                  Latest          $2,400 │
│ Median    $2,400                                  Trend                — │
│ Low       $1,775                                  Volume           ~4/mo │
├──────────────────────────────────────────────────────────────────────────┤
│ $3,000 ┤                                                                 │
│        │                                                                 │
│        │       .                   .             .                       │
│ $2,143 ┤.       .  .     .                                              .│
│        │       .                                                         │
│        │                                                   .          .  │
│        │                                                                 │
│ $1,000 ┤                                                                 │
│        ├─────────────────────────────────────────────────────────────────│
│    vol │▄      █▄  ▄     █         ▄             ▄         ▄          ▄ ▄│
│        └─────────────────────────────────────────────────────────────────│
│         2026-04                      2026-05                      2026-07│
└──────────────────────────────────────────────────────────────────────────┘