Focal MC 2x Converter for Canon FD Mount

Focal MC 2x Teleconverter (Canon FD Mount)
Vintage Manual Focus Focal Length Multiplier – Compact Telephoto Extender
The Focal MC 2x Converter is a classic mechanical optical accessory designed to instantly double the focal length of your existing Canon FD-mount lenses. By placing this compact multi-coated (MC) multiplier between your camera body and your primary lens, a standard 50mm normal lens transforms into a tight 100mm portrait prime, and a 135mm telephoto extends into a powerful 270mm long-reach lens.

Built with an all-metal barrel and an internal optical glass formula, this converter retains full mechanical link communication for Canon’s traditional manual-focus breech-lock and new FD bayonet camera bodies (such as the AE-1, AE-1 Program, A-1, and F-1). It is an incredibly lightweight and budget-friendly alternative to carrying heavy, dedicated telephoto lenses in your gear bag.

Key Features & Operational Mechanics
Instant 2x Focal Length Multiplication: Double your telephoto reach without purchasing an entirely new lens. It offers an easy, pocket-sized way to expand your photographic compositional choices.

Multi-Coated (MC) Optics: Built with specialized optical multi-coatings to maximize light transmission and help protect against internal reflections, ghosting, and lens flare.

Mechanical FD Linkage: Features internal mechanical linkage tabs that connect to your lens’s aperture pin, maintaining automatic diaphragm control and exposure metering compatibility with your Canon FD SLR.

Universal FD Mount Compatibility: Accepts both the early silver-ring breech-lock Canon FD lenses and the later button-release New FD (nFD) variants. It can also be adapted directly to modern mirrorless digital cameras using an FD-mount adapter.

Ultra-Compact & Travel-Friendly: Weights and measures a mere fraction of a true telephoto lens, making it an indispensable addition for travel, wildlife, and outdoor sports photographers looking to travel light.

Operational Tips for Teleconverters
Note on Light Transmission: Like all 2x teleconverters across optical history, fitting this unit introduces a standard 2-stop light loss to your shooting equation. For example, an f/2.8 lens will effectively operate as an f/5.6 lens. This is a natural optical characteristic and is perfectly managed by adjusting your shutter speed or film ISO, or by utilizing your camera’s internal thru-the-lens (TTL) light meter.

Technical Specifications
Accessory Classification: Manual Focus Teleconverter / Focal Length Multiplier

Lens Mount Type: Canon FD Mount Standard

Magnification Factor: 2.0x

Optical Coating: Multi-Coated (MC)

Light Transmission Loss: Exactly 2 F-Stops

Focusing System: Pass-Through Mechanical Manual Focus (Dependent on primary lens)

Dimensions (Diameter x Length): Approx. 2.5 x 1.1 inches / 63 mm x 28 mm

Weight: Approx. 4.6 oz / 130 g