For photographs that look great without requiring the expertise of a professional, choose the Sigma 28 mm - 200 mm lens. The Sigma camera lens for Pentax keeps things simple. The 28 mm - 200 mm f/3.8-5.6 lens includes a picture angle of 12.3 degrees to 75.4 degrees with a zoom lens that produces photos that look natural in different types of lighting. Offering both automatic and manual focuses, the Sigma 28 mm - 200 mm lens fulfills the needs of the professional or the casual photographer. The Sigma camera lens for Pentax is also recognized for its great indoor shooting qualities and is great for both mounted and handheld cameras. Note that the minimum focusing distance of the Sigma camera lens for Pentax is only 19.7 inches (50.1 cm), offering the option to take shots at close range with clarity. The 28 mm - 200 mm f/3.8-5.6 lens can perform in low light situations for portraits and can handle the high light exposure of a landscape shot.