Share Tweet Share Sigma Super Wide Angle Lens - 12-24mm F4.5-5.6This Sigma super wide angle lens signalled the start of a new breed of lenses. Glass designed specifically for Digital SLR’s with a crop factor of 1.5 or 1.6x.Until this release, users of DSLR’s have had to make do with a maximum of 16mm focal length unless they were prepared to fork out a lot of money on a specialised fisheye lens.More and more manufacturers started producing lines of lenses that concentrate on the "super-wide" end of the spectrum and this Sigma super wide angle lens is no exception.Sigma Japan announced the 12 - 24 mm F4.5-5.6 EX DG HSM as a lens that is aimed at providing a good wide angle range for digital SLR’s. Also, an ultra wide angle for film SLR’s. On Sigma’s original SD9 digital SLR (with a 1.7x crop) this lens would provide the same field of view as a 20-41 mm lens. On the Canon EOS-80D/7D series, this would be approximately 19-38 mm. This lens is available in Sigma, Canon, Nikon, Pentax (non-HSM) and Minolta (non-HSM) mounts. It has an estimated Japanese list price of 99,000 YEN ($689, £340 or €450).Technical Specifications check Lens Construction - 16 Elements in 12 Groups check Angle of View - 122 - 84.1 degrees check Number of Diaphragm Blades - 6 Blades check Minimum Aperture - F22 check Minimum Focusing Distance - 28cm / 11 in. check Maximum Magnification - 1:7.1 check Filter Size - Rear Type (Gelatin Filter) check Dimensions - Diameter 87mm X Length 102.5mm 3.4 in. x 3.9 in. check Weight - 600g / 21.6 oz. check Corresponding AF Mounts - Sigma, Canon, Nikon, Minolta, PentaxThe appearance, specifications, and the like of the product are subject to change for improvement.The ReviewsThe reviews on this lens have been a mixed bunch. For the Canon and Nikon users, it doesn’t compare to their equivalents (Nikon AF-S DX Zoom-Nikkor 12-24mm f/4G IF-ED $425+) and (Canon EF-S 10-22mm f/3.5-4.5 USM $650) for quality and ease of use.The Canon and Nikon lenses are smaller, faster (f/4), lighter, and take real filters. In addition, the Canon covers a wider angle and wider zoom range.This Sigma is heavier, bigger, slower (max aperture F/5.6) and can only take gel filters attached to the rear. You can’t rotate a polarizer filter while it’s on the camera, nor can you use graduated filters with the Sigma super wide angle lens.The bottom line is I would go for the Canon or Nikon if your budget can stretch to that, but for around $570, it is worth a look at as a strong alternative if budget is an issue.Buy the Sigma Super Wide Angle Lens from Amazon for the best price. Metabones Firmware Update 2.7 for Panasonic GH5 and Canon EF Lenses Metabones Speedbooster EF to M43 Mount Panasonic GH4 Zoom Range
