|EX||Professional lens with high quality optics and robust build. Meets the highest standards and provides excellent performance and flawless image quality unachievable with traditional optical technologies.|
|DG||The lens is designed for full-frame SLR cameras but can be also used on APS-C SLR cameras.|
|FISHEYE||Fisheye lens designed to provide 180-degree field of view.|
|Position in the lineup|
|Sigma 8mm F/3.5 EX DG Circular Fisheye||Jun 2006||⊗|
|Sigma 8mm F/4 EX DG Circular Fisheye||Oct 2005||⊗|
|Sigma 8mm F/4 EX Circular Fisheye||Sep 1999||⊗|
|Maximum format:||35mm full frame|
|Lens construction:||11 elements in 6 groups, including:|
|Number of blades:||6|
|Closest focusing distance:||13.5 cm|
|Magnification ratio:||1:4.6 at the closest focusing distance|
|Type of autofocus motor:||Micromotor (Canon EF)|
|No motor (Minolta/Sony A)|
|No motor (Nikon F)|
|No motor (Pentax K)|
|No motor (Sigma SA)|
|Full-Time Manual Focus:||No|
|Weight:||SA: 400 g|
|Maximum diameter x Length:||SA: Ø73.5 x 68.6 mm|
|Materials:||High-quality plastic barrel|
|Filter size:||No thread|
Design and Features
For general information on fisheye lenses please refer to the article dedicated to Canon EF 15mm F/2.8 Fisheye.
The lens barrel is of moderate weight, made of high-quality plastic. The lens mount is metallic. The lens barrel has a "crinkle" paint finish (refer to the article dedicated to Sigma 85mm F/1.4 EX DG HSM for more information about the finish).
The lens features AF/M focus mode switch.
|AF||Autofocus mode without Full-Time Manual Focus.|
|M||Manual focus mode.|
Due to the prominent convex profile of the front element the lens does not have a filter thread. However, the manufacturer provided a slip-in filter holder for cut gelatin filters at the rear of the lens.
Sigma also offers a filter adapter as a part of the package. Essentially it is a ring that can be mounted on the front of the lens and accepts standard 72 mm filters. Because of the extreme angle of view of the lens the filter adapter causes marginal vignetting.
Canon version of the lens is equipped with micromotor, the autofocus is moderately noisy and fast.
The focusing ring rotates during autofocus which looks pretty anachronistic by today's standards. It is strongly recommended not to touch the ring or manually stop its movement because it might result in damage to the lens and/or camera.
- The autofocus will not be available with Nikon D40, D40X, D60, D3000-D3400, D5000-D5600 SLR cameras.
|User Manual. English, Adobe PDF, 392 KB|
Alternatives (AF, 7..9 mm)
|Sigma 8mm F/4 EX DG Circular Fisheye||2005||⊗|