Tamron 200mm f/3.5 (CT-200) - Tamron Adaptall Mount

The Tamron 200mm f/3.5 (CT-200) is a vintage manual-focus prime lens featuring the original Adaptall interchangeable mount system. This design allows the lens to be used on various camera bodies by swapping the rear mount. For its era, the f/3.5 aperture offered a relatively bright telephoto solution in a reasonably compact barrel. It is constructed primarily of metal and glass, providing a tactile shooting experience that is popular with photographers adapting vintage glass to modern digital mirrorless systems. When purchasing a used CT-200, it is important to check for internal haze or fungus, which can be common in lenses of this age. The long focus throw should be smooth without any gritty sections. SDS verifies the integrity of the Adaptall mount and ensures the aperture blades are dry and responsive. As a telephoto prime, ensure the built-in retractable lens hood, if present, slides smoothly and stays in position.