Pentax HD D FA 15-30mm f/2.8 ED SDM WR - Pentax K Mount

This ultra-wide-angle zoom provides a constant f/2.8 aperture, making it ideal for astrophotography, architecture, and landscapes. The optical construction includes three extra-low dispersion elements and three aspherical elements to ensure edge-to-edge sharpness. It features a built-in petal-shaped lens hood and weather-resistant sealing to protect the internal mechanisms from dust and moisture during outdoor use. The large, bulbous front element is susceptible to scratches, so inspect the glass surface carefully. Check the SDM autofocus for smooth, silent operation. SDS tests the zoom and focus rings for consistent resistance and examines the rear mount for wear. Due to the weight of the lens, ensure there is no play in the barrel assembly.