ZEISS IKON CONTAREX I

Name: Zeiss Ikon Contarex I
Brand: Zeiss Ikon

The Zeiss Ikon Contarex I is a professional-grade 35mm single-lens reflex (SLR) camera introduced in 1958, marking Zeiss Ikon’s ambitious entry into the high-end SLR market. Renowned for its precision engineering, integrated light metering system, and compatibility with Carl Zeiss T* lenses, the Contarex I set a benchmark in optical and mechanical excellence during the early years of the SLR revolution.

Overview

The Contarex I, often referred to as the "Bullseye" due to its distinctive circular selenium light meter surrounding the lens mount, was Zeiss Ikon’s flagship 35mm SLR at a time when the photographic industry was transitioning from rangefinders to SLRs. Released in 1958, it was designed explicitly for professional photographers and serious enthusiasts who demanded the highest standards in optical quality, mechanical reliability, and ergonomic design. As the first model in the Contarex line, it established a lineage that would include the Contarex II and III, though the original I remains notable for its mechanical shutter and unique metering solution.

Zeiss Ikon, a consortium of German camera manufacturers led by Carl Zeiss, sought to consolidate its reputation for optical superiority into a modern SLR platform. The Contarex I was engineered in collaboration with Zeiss’s optical division in Oberkochen and manufactured by Zeiss Ikon in Stuttgart. It featured a rigid, all-metal body with a die-cast aluminum chassis, precision-machined components, and a shutter mechanism derived from the Contaflex line of twin-lens reflex cameras. The camera was marketed as a system camera, with compatibility across a range of Zeiss lenses, viewfinders, and accessories, emphasizing modularity and long-term investment.

The Contarex I was positioned as a direct competitor to the Nikon F and the Exakta VX, but with a distinct emphasis on integrated metering and compact ergonomics. Its most iconic feature—the circular selenium meter—provided center-weighted exposure readings without requiring batteries, a significant advantage in an era when battery reliability was inconsistent. However, this design also introduced challenges, as the meter's sensitivity could degrade over time and its placement limited the use of certain filters and lens hoods.

Specifications

Specification	Value
Type	Single-Lens Reflex (SLR)
Film Format	35mm (135 film)
Years Produced	1958–1962
Lens Mount	Contarex bayonet (Zeiss Ikon proprietary)
Shutter	Horizontal-travel, focal-plane cloth shutter; speeds 1 sec to 1/1000 sec, plus B
Metering	Built-in selenium cell, circular "bullseye" meter surrounding lens mount
Exposure Modes	Manual only (shutter speed and aperture set manually; meter provides guidance)
Viewfinder	Interchangeable pentaprism with ground-glass focusing screen, central microprism spot
Dimensions	148 × 95 × 58 mm; weight: ~790 g (body only, no lens)

Key Features

Bullseye Light Meter: Unique circular selenium meter surrounding the lens mount, providing center-weighted exposure readings without batteries.
Zeiss Lens Compatibility: Designed for high-performance Carl Zeiss lenses, including Planar, Sonnar, and Distagon series, many featuring T* anti-reflective coatings.
Interchangeable Viewfinder and Focusing Screens: Allowed customization for different shooting scenarios (e.g., sports, macro, studio).
Precision Focal-Plane Shutter: Reliable horizontal cloth shutter with speeds from 1 sec to 1/1000 sec, accurate to ±1/3 stop.
Robust Mechanical Construction: All-metal body with die-cast chassis, engineered for durability and long-term use in professional environments.

Historical Context

The Contarex I was launched at a pivotal moment in photographic history. By the late 1950s, SLRs were beginning to supplant rangefinders as the preferred tools for professional photographers, particularly in photojournalism and studio work. The success of the Asahi Pentax and the impending release of the Nikon F in 1959 created a competitive landscape that Zeiss Ikon aimed to dominate with a technically superior offering. The Contarex I was intended not only as a camera but as a complete photographic system, reflecting Zeiss’s philosophy of integrated design and optical excellence.

Despite its advanced engineering, the Contarex I faced challenges in market adoption. Its proprietary lens mount prevented compatibility with third-party lenses, a disadvantage compared to the Nikon F’s rapidly expanding F-mount ecosystem. Additionally, the bullseye meter, while innovative, proved vulnerable to damage and deterioration, and its placement interfered with the use of screw-in filters and wide-angle lenses. These factors, combined with a high price point, limited its commercial success. Nevertheless, the Contarex I earned respect among professionals for its build quality and optical performance, laying the foundation for subsequent models that would refine its design.

Collectibility & Value

Today, the Contarex I is a sought-after collector’s item, prized for its historical significance, distinctive design, and association with Carl Zeiss optics. In excellent working condition, with a functional meter and original lens (typically the 50mm f/2 Planar or f/2 Biogon), prices range from $1,200 to $2,500 depending on provenance and completeness. Fully serviced examples with rare accessories—such as the rapid-wind motor or interchangeable screens—command premiums.

Collectors should be cautious of non-functional meters, as selenium cells cannot be easily repaired and often exhibit reduced sensitivity or erratic readings. Other common issues include shutter curtain deterioration, light leaks from aging foam seals, and lubrication hardening in the film transport mechanism. Because the camera lacks electronic components, it remains usable without modification, but proper CLA (clean, lubricate, adjust) servicing by a technician experienced with vintage SLRs is recommended before regular use. Original boxes, manuals, and warranty cards significantly enhance value.

Similar Cameras

Nikon F (1959) – The benchmark professional SLR with extensive lens compatibility and rugged build.
Exakta VX (1959) – German-engineered SLR with innovative features but less refined ergonomics.
Praktina FX (1952–1960) – Modular 35mm SLR with interchangeable components, aimed at professionals.
Topcon RE Super (1963) – Japanese SLR with built-in metering and high-quality lenses, released shortly after the Contarex I.
Alpa-Reflex (1944–1960s) – Precision Swiss SLR favored by studio photographers, emphasizing modularity and optical quality.

Repair & Maintenance

The Contarex I requires no batteries for operation, as its selenium meter generates its own power. However, the meter’s performance may degrade over decades due to cell fatigue or moisture damage. Shutter maintenance is critical: the horizontal cloth shutter should be exercised regularly to prevent sticking, and the rubber light seals should be replaced every 10–15 years to prevent light leaks. The film advance mechanism and mirror box are robust but benefit from periodic cleaning and lubrication by a qualified technician. Due to the proprietary lens mount and limited service documentation, repairs are best handled by specialists familiar with Zeiss Ikon systems. Spare parts are scarce, making preservation and preventive care essential for long-term usability.