3.5X High-Definition Telephoto Converter — Compatible with Pentax K-20D (Only for Lenses with 49, 52, 55, 58, 62 & 67mm Filter Threads)

This 3.5X High-Definition telephoto converter screws onto the front of an existing lens to deliver increased magnification for DSLR photography and is compatible with Pentax K-20D. Built to mount over your current lens, it provides a simple way to bring distant subjects closer without replacing your primary optics. Optical construction includes three extra-low dispersion glass elements that reduce both longitudinal and lateral chromatic aberration in in-focus and out-of-focus areas, minimizing purple fringing and ghosting across the aperture range. The converter uses multi-coated optical glass and accepts 72mm filters, ensuring strong light transmission with reduced reflections and easy filter handling. Designed with a shorter flange distance for DSLR use, the unit improves image sharpness while remaining more compact than many alternatives. Its small footprint and light weight — only 2 inches tall and 6.4 oz without the hood — make it easy to carry for wildlife, sports, portrait, or travel shoots. Item Includes: Lens, Pouch, Stepping Rings, Lens cap, Bottom Cover.