Sigma 8mm F3.5 EX DG Circular Fisheye Lens

The Sigma 8mm F3.5 EX DG Circular Fisheye is a fast F3.5 aperture with circular imaging fisheye lens with close up capability, optimized for use with digital SLR cameras. It features 8mm focal length and has an angle of view of 180°. Sigma's super multi-layer coating and Special Low Dispersion (SLD) glass deliver excellent image quality for digital and film SLR cameras. With an auto focus system at hand, you will be able to achieve accurate focusing even at an extremely large depth of field. This lens also features rear (Gelatin filter). It is made to be compatible with APS-C and Full Frame Sensor DSLR Cameras.

Product Features in Detail

Auto-focus system
This circular fisheye lens produces circular images with an angle of view of 180°and also incorporates an auto focus system to achieve accurate focusing that might be difficult through the camera`s viewfinder due to the extremely large depth of field.

F3.5 maximum aperture
This lens is perfectly suited for low light conditions indoors or at dusk.

Close-up Photography
This circular fisheye lens has a minimum focusing distance of 13.5cm (5.3") and a maximum magnification of 1:4.6 making it particularly useful for close-up photography.

Excellent optical performance
Special Low Dispersion (SLD) glass offer effective compensation of color aberration.

MultiLayer coating#Reduction of flare and ghosting
Sigma's super multi-layer lens coating reduces flare and ghosting, a common problem with digital cameras and also creates an optimum color balance.

An ideal lens for scientific applications
Due to the quantifiable angle/area relationship it produces, this lens can be used for scientific applications such as solid angle measurements of cloud distribution over the sky, or vegetation distribution of the rain forest canopy.

Gelatin Filter Holder
A holder at the rear of the lens accepts gelatin filters.