Soligor MP Auto 2x Teleconverter For Canon FD

The Soligor MP Auto 2x Teleconverter for Canon FD is a third-party accessory designed to double the effective focal length of a compatible Canon FD-mount lens, giving photographers extended telephoto reach without purchasing a longer prime or zoom lens. Soligor was a well-known third-party optics brand during the film SLR era, offering more affordable alternatives to first-party teleconverters and lenses.

The teleconverter mounts between the camera body and a compatible FD-mount lens, optically doubling the focal length of whatever lens is attached, for example turning a 50mm lens into an effective 100mm, or a 135mm lens into an effective 270mm. This offers a low-cost way to extend telephoto reach for wildlife, sports, or distant subjects using FD lenses already in a photographer’s kit, rather than investing in additional longer glass. The “Auto” designation indicates the teleconverter maintains automatic aperture functionality with compatible FD lenses, allowing the diaphragm to continue operating automatically as it would without the converter attached, rather than requiring manual stop-down metering.

As with any 2x teleconverter, using this accessory comes with a light loss of two stops, meaning the effective maximum aperture of the attached lens is reduced accordingly, for example an f/2.8 lens becomes effective f/5.6 once the converter is attached. This tradeoff affects viewfinder brightness and how much light reaches the film, and is more pronounced with 2x designs compared to smaller 1.4x converters.

As a fully manual accessory consistent with the FD-mount system it’s designed for, the teleconverter has no autofocus or electronic communication beyond the mechanical aperture coupling, requiring photographers to focus manually as they would with any FD-mount lens. Because Soligor produced third-party teleconverters across multiple lens mounts and occasionally varying optical formulas, photographers should confirm the specific optical construction and condition of this individual unit, since image quality and sharpness with any teleconverter depend heavily on both the converter and the quality of the lens it’s paired with.

Key Features
– 2x teleconverter for Canon FD-mount lenses
– Maintains automatic aperture function with compatible FD lenses
– Doubles effective focal length of attached lens
– Two-stop light loss (e.g., f/2.8 becomes effective f/5.6)
– Fully manual focus operation (consistent with FD-mount system)
– Third-party construction typical of the film SLR era