Tamron AF 75-300mm f/4-5.6 LD Macro - Canon EF, Nikon F, Sony A, Pentax K Mount

The Tamron AF 75-300mm f/4-5.6 LD Macro is a versatile telephoto zoom designed for film and digital SLR cameras. It features Low Dispersion (LD) glass to help reduce chromatic aberrations and includes a macro setting that allows for closer focusing at the 300mm end. It is a lightweight, budget-friendly option for those needing significant reach without the bulk of professional telephoto glass. When buying used, check the zoom action for 'creep', where the barrel extends under its own weight. SDS inspects the autofocus motor, which can be noisy compared to modern ultrasonic drives, to ensure it is operating within normal parameters. The internal optics are checked for 'haze', a common issue in older Tamron lenses, and the aperture blades are tested for oil or sluggishness.