Sigma 17 mm F/4 DG DN for Leica-L and Sony FE Mount Cameras

Phil Rudin · Issue 133, Jul/Aug 2023 · pp. 36–38

Products mentioned: Sigma 17mm F/4 DG DN, Sigma 90mm F/2.8 DG DN, Sony A7R V, Marelux MX-A7RV housing, Marelux 180mm optical glass dome port, Marelux 140mm optical glass dome port, Backscatter MF-2 flash, UWTechnics TTL flash trigger, Flexibuoy, Rokinon/Samyang 18mm F/2.8, Zeiss lens, Tamron lens

Sigma is a Japanese company founded in 1961 which exclusively provides quality photography and video-related products world wide. All products are manufactured in Aizu in the Tohoku region of Japan. The contemporary lens line which is the subject of this review features the very latest in technology and optical performance combined in a very small package. I own the Sigma 17mm F/4 being reviewed and the very compacted 90mm F/2.8 DG DN. The Sigma 17mm has an F/4 to F/22 aperture range and a rectilinear angle of view of 103.7 degrees or around 70 degrees if you switch to APS-C mode. The lens has all metal construction including the lens hood and weights in at 220g (7.8oz). The lens is also quite small at 64mm and 50.8mm long or (2.5” X 2”). The front filter size is a small 55mm, It has seven rounded blades with nine elements in eight groups. The Sigma 17mm F/4 is quite basic on the outside…