Canon ERC-E4M, EF 200mm f/2L IS USM EF 300mm f/2.8L IS USM EF 400mm f/4 DO IS USM EF300/28LII, Gray Canon ERC-E4M. Compatibility: EF 200mm f/2L IS USM EF 300mm f/2.8L IS USM EF 400mm f/4 DO IS USM EF300/28LII, Product color: Gray