Sigma Imaging (UK) Ltd

	Digital Photographer - Issue 73 ‘…fisheye lenses can be used to create striking visual and compositional effects, and they’re popular with more creative and adventurous photographers. It’s tempting to imagine that this lens would be perfect for squeezing in panoramic landscapes. Indeed, it can be used with ‘stitching’ software to create interactive 2D and 3D panoramas.’

	Outdoor Photography - October 2008 ’Despite being a photographer who normally prefers to record nature authentically, my attitude shifted the moment I first looked at the world through such an extreme focal length. The fisheye effect is captivating. The lens’ unique perspective can be combined to good effect with practically any subject – you just need to learn to look at your environment with a creative eye.’

	Digital Camera Buyer - Issue 75 ‘For professional photographers whose trademark is surreal effect, those who produce interactive 3D virtual environments or need to produce images for scientific analysis, the Sigma 4.5mm fisheye could be a sound investment.’

	Practical Photography - October 2008 ‘The lens itself feels solid and well made, and the autofocus is fast and quiet. Results are good, with high levels of sharpness at the centre of the frame. Flare is well controlled considering the lack of lens hood and exposed front element. A well made specialist optic that’s unique in the market place and hard to fault. If you have a use for round images, go ahead and buy it.’

	PhotoPlus - Spring 2009 ‘Fit one of these to your camera and you get an instant wow-factor just looking through the viewfinder. Autofocus comes courtesy of Sigma’s fast and near silent HSM system, which worked flawlessly in our tests. As well as creating a fisheye effect, this lens is also great for use with computer stitching software, so you can transform images into navigable virtual reality scenes. And to the best of our knowledge, if you want a circular fisheye for your smaller-sensor camera, this is the only one of the market.’