Tamron 70-210mm f/3.8-4 Lens for Minolta MD

The Tamron 70-210mm f/3.8-4 Lens for Minolta MD is a manual-focus telephoto zoom lens built on Tamron’s Adaptall-2 interchangeable mount system, representing the final version in Tamron’s line of affordable telephoto zooms that began with the earlier 80-210mm models. Produced between 1986 and 1988, it’s a practical, lightweight telephoto option for photographers using Minolta MD-mount 35mm film SLR cameras.

Optically, the lens covers a 70-210mm focal range with a variable maximum aperture of f/3.8 at the wide end narrowing to f/4 at full telephoto (down to f/22 minimum), delivering a 34° to 11° angle of view. The 12-element, 9-group optical construction uses no special optical elements, and a 9-blade diaphragm (straight rather than rounded petals) produces an aperture shape that’s nearly circular at f/5.6 and intermediate settings between f/3.8-4 and f/5.6, forming a regular polygon at other apertures.

The lens uses a reversible push-pull zoom design, where the maximum focal length is reached when the zoom/focus ring is closest to the camera mount, with the combined focus and zoom ring rotating approximately 270 degrees for focusing. As a fully manual lens, both focus and aperture are controlled directly on the barrel, with automatic iris control available when paired with the corresponding Minolta MD Adaptall-2 mount adapter; markings on the ring display focusing distance in both meters and feet, along with an infrared focus index.

A notable strength of this lens is its close-focusing capability, with a minimum focus distance of 0.9m (35.4 in.) from the film plane, yielding a maximum magnification of approximately 1:2.9, well suited to detail and close-up shooting without needing a dedicated macro lens. Build quality uses a metal lens barrel paired with plastic aperture and focus/zoom rings, including a knurled plastic diamond-pattern grip, keeping the overall lens relatively light at approximately 580-610g (without the Adaptall-2 mount) and measuring approximately 66mm in diameter by 139.4-144mm in length. It accepts a 58mm filter thread, and a screw-in lens hood was offered as an optional accessory.

As an Adaptall-2 system lens, the Tamron 70-210mm f/3.8-4 requires the appropriate Minolta MD-mount adapter to attach to Minolta MD-mount camera bodies, and remains compatible with full-frame 35mm film cameras at its stated field of view.

Key Features
– 70-210mm telephoto zoom (Tamron Adaptall-2, model 46A) for Minolta MD mount (adapter required)
– Maximum aperture f/3.8-4 (variable), down to f/22
– 12 elements in 9 groups optical construction
– 9-blade diaphragm
– Reversible push-pull zoom design
– Fully manual focus; automatic iris control with compatible Adaptall-2 mount
– Minimum focus distance of 0.9m (35.4 in.); approximately 1:2.9 maximum magnification
– Distance scale in meters/feet with infrared focus index
– Metal barrel with plastic aperture and zoom/focus rings
– 58mm filter thread
– Approximate weight: 580-610g (without mount adapter)
– Compatible with Minolta MD-mount 35mm film SLR cameras (via Adaptall-2 adapter)