副廠鏡頭品牌關於「SIGMA DN」標籤，搜尋引擎有相關的訊息討論：
DG DN 鏡頭(專為無反而設的全畫幅鏡頭) - Sigmasigma-eshop.hk › product-category › dg-dn24mm F1.4 DG DN | Art - SIGMA Canadawww.sigmacanada.ca › Collections › ArtDC DN | sigma-photowww.sigma-photo.com.sg › dn-lens14mm F1.4 DG DN | Art | Lenses - SIGMA Globalwww.sigma-global.com › SIGMA › Lenses