0.4x High-Grade Wide Angle Converter for Pentax K-3 Mark III — Fits 49, 52, 55, 58, 62 & 67mm

Overview: This 0.4x high-grade wide angle converter screws onto the front of your existing lens to dramatically widen the field of view for the Pentax K-3 Mark III. It’s finished in black and built with all-glass, multicoated optics to deliver crisp, high-definition images for both photo and video work. Compatibility & fit: PLEASE VERIFY YOUR CAMERA'S LENS THREAD SIZE BEFORE ORDERING. The converter requires a front thread of one of the following sizes: 49, 52, 55, 58, 62 or 67mm. Your lens size is typically stamped on the lens barrel, printed on the glass, or shown under the lens cap and is always preceded by a diameter symbol (see product images for guidance). Optical performance: Designed to produce ultra-wide panoramic shots with minimal aberration, this converter achieves just 1% distortion and 2.3% vignetting. It features extreme-speed auto focus compatibility and the multicoated all-glass elements help ensure clear, sharp results. Build & warranty: Crafted in Japan and backed by a 5-year USA manufacturer's warranty, this wide-angle converter offers reliable construction and long-term support. Accessories & filters: Accepts 82mm filters. Included in the package are: Lens, Lens Pouch, Lens Caps, Rings 49, 52, 58 & 67mm, Warranty.