PETRI V6

Name: Petri V6
Brand: Petri

The Petri V6 is a 35mm rangefinder camera produced by Kuribayashi Camera Company (marketed under the Petri brand) from 1965 to 1970. It is notable for its compact design, high-quality lens, and the inclusion of the innovative GREEN-O-MATIC viewfinder system, which enhanced focusing precision under varying light conditions.

Overview

Introduced during a transitional period in Japanese camera manufacturing, the Petri V6 represented Petri’s effort to compete in the premium 35mm rangefinder market dominated by Leica and Canon. Marketed as a compact yet fully-featured rangefinder, the V6 was aimed at advanced amateur photographers and photojournalists seeking a reliable, lightweight alternative to bulkier systems. The camera featured a fixed Petri Color-Ultron 45mm f/1.8 lens, a fast normal prime that delivered excellent sharpness and low-light performance for its era. Its all-metal construction, combined with a smooth film advance and precise rangefinder patch, reflected Petri’s commitment to quality engineering.

The V6 was part of a broader lineup of Petri rangefinders that included models like the V3 and V7, but it distinguished itself with the GREEN-O-MATIC viewfinder—a proprietary system that used a green-tinted focusing aid to improve contrast and reduce eye strain. This feature, along with its coupled rangefinder and manual exposure controls, positioned the V6 as a technically sophisticated option in the mid-1960s rangefinder landscape. While Petri never achieved the brand prestige of Leica or Nikon, the V6 exemplified the high standards of Japanese optical and mechanical design emerging during this period.

Specifications

Specification	Value
Type	Rangefinder
Film Format	35mm
Years Produced	1965–1970
Lens Mount	Fixed Petri Color-Ultron 45mm f/1.8 lens (non-interchangeable)
Shutter	Copal-Seikosha focal-plane shutter with speeds from 1 sec to 1/1000 sec, plus B
Metering	None (unmetered)
Exposure Modes	Manual only
Viewfinder	Optical viewfinder with integrated rangefinder patch and GREEN-O-MATIC focusing aid
Dimensions	Approx. 140mm (W) × 80mm (H) × 45mm (D); Weight: ~580g (body with lens, no battery)

Key Features

Petri Color-Ultron 45mm f/1.8 lens: A high-speed, multi-coated normal lens offering excellent contrast and sharpness, optimized for low-light performance and shallow depth of field.
GREEN-O-MATIC viewfinder system: Utilized a green phosphor-coated focusing patch to enhance visibility and reduce eye fatigue, particularly in dim lighting—unique among rangefinders of the era.
Precision focal-plane shutter: Offered a wide range of shutter speeds from 1 second to 1/1000 second, with smooth mechanical operation and flash synchronization at all speeds via X and M contacts.
Compact, all-metal body: Constructed with die-cast alloy and finished in black enamel or chrome, the V6 was both durable and portable, with a top-mounted film advance lever and centrally located rewind knob.
Coupled rangefinder focusing: Provided accurate manual focus via a bright, centrally located patch visible through the viewfinder, with a base length optimized for the 45mm focal length.

Historical Context

The Petri V6 was launched in 1965, a time when Japanese camera manufacturers were rapidly gaining ground in the global market through innovation, quality control, and competitive pricing. While Leica and Contax had long dominated the high-end rangefinder segment, companies like Petri, Canon, and Nikon were introducing technically advanced models that offered comparable performance at lower prices. The V6 was Petri’s answer to cameras like the Canon Canonet QL17 and the Leica M3, though it occupied a niche position due to its fixed-lens design and lack of built-in metering.

Despite its advanced features, the V6 faced stiff competition from both rangefinders and the emerging generation of 35mm SLRs. By the late 1960s, SLRs were becoming the preferred choice for serious photographers due to their through-the-lens viewing and interchangeable lens systems. Petri attempted to adapt, but the V6 remained a fixed-lens rangefinder without metering—features increasingly seen as outdated. Production ceased around 1970 as Petri shifted focus toward simpler, more mass-market models and eventually exited the high-end camera segment.

Collectibility & Value

Today, the Petri V6 is a sought-after collector’s item among enthusiasts of vintage Japanese rangefinders. While not as widely recognized as Leica or Nikon models, it is appreciated for its build quality, optical performance, and unique GREEN-O-MATIC system. In excellent working condition, with a clean lens and smooth shutter operation, the V6 typically sells for $250–$400 USD, depending on finish (chrome or black) and rarity. Chrome models are slightly more common, while black enamel versions are rarer and often command higher prices.

When purchasing a V6, collectors should inspect the lens for haze, fungus, or separation—common issues in older multi-coated lenses. The shutter should be tested across all speeds, particularly 1/500 and 1/1000 sec, where lubricant drying can cause inaccuracies. The GREEN-O-MATIC patch may degrade over time, losing its green tint or becoming cloudy, which diminishes one of the camera’s signature features. As the camera is fully mechanical, no battery is required for operation, making it reliable for use with modern film. However, original accessories such as the leather case or lens cap can significantly increase value.

Similar Cameras

Canon Canonet QL17 GIII – A fixed-lens rangefinder with built-in CdS metering and a 40mm f/1.7 lens, produced into the 1980s.
Yashica Electro 35 – An electronic rangefinder with aperture-priority automation and a 45mm f/1.7 lens, popular in the 1970s.
Leica M2 – A benchmark 35mm rangefinder with interchangeable lenses, manual exposure, and exceptional build quality.
Nikon SP – A high-end rangefinder with multiple framelines and a bright viewfinder, aimed at professional photographers.
Fujica ST705 – Though an SLR, it shared the V6’s emphasis on precision engineering and high-quality lens options.

Repair & Maintenance

The Petri V6 requires no batteries for operation, as it is a fully mechanical camera with a manual focal-plane shutter. This makes it inherently reliable and suitable for long-term use with minimal maintenance. However, like all cameras of its age, it may require servicing if stored improperly or left unused for decades. Common issues include stiff or sticky shutter speeds, particularly at the higher end (1/500–1/1000 sec), due to dried lubricants. A full CLA (Clean, Lubricate, Adjust) by a technician experienced with vintage Japanese shutters is recommended for cameras that have not been serviced in 20+ years.

The rangefinder mechanism should be checked for alignment (collimation), as misalignment can lead to focusing errors. The GREEN-O-MATIC patch is not user-serviceable and cannot be easily restored if degraded. Lens cleaning should be performed carefully to avoid scratching coatings. Overall, the V6 is considered moderately repairable, though parts availability is limited—most repairs rely on skilled hand-fitting and restoration rather than replacement components. With proper care, the Petri V6 remains a functional and elegant example of 1960s Japanese camera craftsmanship.