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Sigma lens circular fisheye 8mm F4 EX DG
Jasper Huitink : October 9th 2005 - 16:30 CET
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SigmaSigma lens circular fisheye 8mm F4 EX DG : This lens is used to produce circular images, creating vast distortion with an angle of view of 180° when attached to a full-frame digital SLR camera. This one is equipped with a new multi-layer coating technology that reduces both flare and ghosting and ensures accurate color and high image quality for both film and dSLR 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 forest, etc., due to the quantifiable angle/area relationship it produces. Also supplied with the lens is a fitted padded case and a gelatin filter holder at the rear, allowing the use of gelatin filters.
Sigma lens circular fisheye 8mm F4 EX DGSigma circular F4 - Specifications
• Focal Length : 8mm
• Minimum Aperture : F32
• Lens Construction : 10 different Elements in 6 different Groups
• Angle of View : 180 degree
• Number of Diaphragm Blades : 5pcs
• Minimum Focusing Distance : 20cm
• Maximum Magnification : 1:13.9
• Filter Size : Rear (Gelatin filter)
• Dimensions : Diameter 73.5mm (2.8in) x Length 63mm (2.4in)
• Weight : 320gr/11.2oz
• Camera : Every full frame dSLR

Sigma circular fisheye 8mm - Features
• New multi-layer lens coating and lens design reduce flare and ghosting
• High image quality for film and digital SLR cameras
• Useful for academic/technical applications such as solid angle measurements
• Equipped with a gelatin filter holder at the rear

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