Lens Lab
    SMC Pentax-FA 80-320 mm f/ 4.5-5.6
    SMC Pentax-FA 80-320 mm f/ 4.5-5.6

    SMC Pentax-FA 80-320 mm f/ 4.5-5.6

    80–300mm · f/4.5–5.6

    Overview

    The SMC Pentax-FA 80-320 mm f/4.5-5.6 is a budget telephoto zoom with decent center sharpness at smaller apertures but soft corners and significant chromatic aberration (OpticalLimits). Build quality is plasticky with a slow, noisy autofocus, though the manual focus ring is smooth. It suits casual shooters needing reach on a budget, but serious users may find its optical flaws limiting.