Amazon.com : Haoge LH-E2T 49mm Square Metal Screw-in Lens Hood with Cap for Sony RX1 RX1R RX1RII Camera, Sony E 20mm f2.8, 28mm f2, 30mm f3.5, 35mm f1.8, 50mm f1.8, TE 24mm
Pentax 49mm Lens Hood for 100mm Lenses - Accessory
Minolta A 35-80mm f4-5.6 AF Lens Hood Shade for 49mm rim | eBay