Endiselt testilainel: novembrikuine UK Advanced Photographer testis erinevaid telekonvertereid, sealhulgas Sigma APO EX DG 1.4x ja EX DG 2.0x konverterit. Sigma konverterid said 97 punkti 100st ja sellega ületati nii Canoni, Kenko kui Nikoni tulemus. Lühikokkuvõtte: "..Sigma teleconverters are a very safe bet. They are small and light, well made and perhaps little tougher than the Kenkos with metal barrels to secure the mounts. Best of all, they are very affordable.."

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