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, 灰色 Canon ERC-E4M. 兼容性: EF 200mm f/2L IS USM EF 300mm f/2.8L IS USM EF 400mm f/4 DO IS USM EF300/28LII, 产品色彩: 灰色