Kowa Telephoto 500mm:f5.6 TX07 Mount Adapter, metal, black. - Brand: Kowa - Model: TX07C for Canon EOS - Color: Black - Material: Metal - Features: Mount adapter - Specifications: For Telephoto 500mm f:5.6, it becomes 0.7x, so the F-value is f4 and 350mm equivalent on full-frame. 560mm on APS-C. Adapter body only. With cap Thank you for viewing.