Sigma 8mm f/3.5 EX DG Circular Fisheye Lens for Canon SLR Cameras

Product Description The Sigma 8mm f/3.5 Ex DG Circular fisheye auto focus lens for Canon produces Circular images with an angle of view of 180 Degree when attached to a full-frame digital or 35mm film SLR camera. It has a maximum aperture of F3.5, a minimum focusing distance of 13.5cm (5.5") and a maximum magnification of 1: 4.6. The special fisheye design allows maximum creative expression. Sigma super multi-layer lens coating reduces flare and ghosting, a common problem with digital cameras. The new lens power layout reduces color aberrations. Providing excellent image quality for digital and film SLR cameras. This lens can be used for the scientific applications such as the solid angle measurements of cloud distribution over the sky, The vegetation distribution of the rain forest Canopy, etc., Due to the quantifiable angle/area relationship it produces. This lens has a gelatin filter holder at the rear, allowing the use of gelatin filters. From the Manufacturer This circular fisheye lens produces circular images with an angle of view of 180-degrees when attached to a full-frame digital or 35mm film SLR camera. It has a maximum aperture of f3.5, a minimum focusing distance of 5.5-inches and a maximum magnification of 4.6x. The special fisheye design allows maximum creative expression. Sigma's super multi-layer lens coating reduces flare and ghosting, a common problem with digital cameras. The new lens power layout reduces color aberrations. Providing excellent image quality for digital and film SLR cameras. This lens can be used for the scientific applications such as the solid angle measurements of cloud distribution over the sky, the vegetation distribution of the rain forest canopy, etc., due to the quantifiable angle/area relationship it produces. This lens has a gelatin filter holder at the rear, allowing the use of gelatin filters. DG (DG lens) These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for digital SLR cameras whilst retaining suitability for traditional 35mm SLRs. EX (EX lens) The exterior of this lens is EX-finished to denote the superior build and optical quality, and to enhance its appearance.

• Digitally-optimized, circular fisheye auto-focus lens
• Produces circular images with an angle of view of 180-degrees when attached to a full-frame digital or 35mm film SLR camera
• Maximum aperture of F3.5, a minimum focusing distance of 5.3 inches, and a maximum magnification of 4.6x, Maximum Focal Length - 8 mm
• Super multi-layer lens coating reduces flare and ghosting
• Gelatin filter holder at the rear