Pentax MH-RE49 Lens Hood for HD DA 40mm f/2.8 Limited 38712 B&H
Amazon.com : 67mm Lens Hood Universal Collapsible Lens Sun Shade Hood with Centre Pinch Lens Cap for Canon Nikon Sony Pentax Olympus Fuji Camera : Electronics
Pentax 49mm Round Rubber Lens Hood FA for 50/1.4, 1.7 Lenses 34260