Sigma Imaging (UK) Ltd

	Digital Photo - November 2005 ‘This is a robust, well-made lens, and is also the cheapest here by a good £65. If you’re looking for a good value wide-angle lens, this one is hard to fault.’‘The Sigma 10-20mm offers a superb combination of focal length, quality and affordability – the very things that are worthy of a Gold Award.’

	Ephotizone - August 2005 ‘This lens is sharp! At 20mm, resolution tests showed it matched, and at one point even slightly out performed the venerable Canon 17-40mm L. Chromatic aberrations have been very well controlled with the employment of three SLD (Special Low Dispersion) elements, one moulded aspherical and two hybrid aspherical elements. The performance is excellent and the size and weight is little more than a standard.' ‘With the wide field of view that this lens gives the digital SLR owners that require panoramic style angles, this lens is an answer to their prayers.’

	Practical Photography - December 2005 'Even though the price tag is low compared to its direct rivals, the build quality and handling are excellent. Both the focus and zoom rings are smooth, as is the high speed inner focusing. The results are excellent, particularly at f/8. If you like wide distortion, you can get to 24cm of your subject, which is plenty to get the strange perspective-distorting joys that only a wide-angle lens can give you. If you prefer to use it in a more traditional way - it’s great for landscapes too. The lens is great value and really worthy of space in your camera bag.'

	Amateur Photographer - 3rd December 2005 'The aspherics are the front two and the rear, field lens. Super low dispersion glass is used for the three elements fronting the field lens at the rear. The internal focusing works by movement of the six-element section behind the six-bladed circular diaphragm. First impressions are always important when testing lenses… as the images came up on screen the sense was of excellent resolution/contrast - the detail glittered.'

	F2 Freelance and Digital - December/January 2005/2006 'The manual focusing is seductive; you turn the front ring, and the internal focus indicator moves half the distance. It doubles the precision with which you can adjust focus manually and also looks like a quality mechanism. Overall for its £350 or so the 10-20mm Sigma feels more professional than the rival Tamron. It’s a little heavier, but feels much more; it is designed better visually; and its operating controls are smother. Overall, it’s one of the best specific purpose lenses for APS-C format digital SLRs, and once again shows the camera makers how to do it.'

	Master Photo Digital - Christmas Edition 2005 ' … the Sigma is an EX range model and built in the usual Sigma tank-like fashion. Overall the Sigma comes over a more professional looking lens with build quality more comparable with Nikon’s original glass.'

	Digital Photographer - Issue 42 ‘It looks like Sigma has produces a winner with this lens, and one that could tempt users over from their dedicated Nikon and Canon optics. Sigma is really upping the game, and looks to be a force to be reckoned with in the future.’ ‘To produce such a radical lens from scratch and end up with such high quality results goes to show how far Sigma has come. The lens overcomes the biggest drawback of the cropped digital SLR, that of a narrower angle of view and does it with a certain degree of class. Already proving a best seller.’

	The Photographer - April 2006 ‘The build quality of this lens is quite superb. It carries the Sigma ‘EX’ label, with a gold ring, which signifies superior optical and build quality. Using this lens certainly confirms this. All the operations are smooth, solid and reassuringly positive. There is no doubt that Sigma has produced a stunning winner with this newly designed great value zoom. The extreme wide-angles of this 10-20mm zoom produce breathtaking effects which will certainly inspire and extend your photographic creativity.’

	Digital Camera Shopper - May 2006 ‘The weight gives it a feeling of quality…and this is echoed in the optical performance of the lens. Our test revealed excellent sharpness at the centre and the edges. Colour fringing was so low as to be barely detectable and there was little sign of barrel distortion either, even at the widest focal length. The Sigma’s optical performance is first rate and handling is good too.’

	Which Digital Camera - July 2006 ‘An attractively finished lens it uses Sigma’s Hypersonic motor (HSM) for focusing. This ensures fast autofocus, a quiet and indeed responsive performance. It’s a neat, compact lens, with a nice feel to the design. The zoom ring is a good size and it is easy from one end of the range to the other.’

	Outdoor Photography - August 2006 ‘The lens’s ability to capture wide, sweeping vistas is its obvious strength. Its short minimum focusing distance makes it possible to position the lens close to foreground interest, creating striking compositions bursting with impact.’ ‘Unlike many other ultra wideangle lenses, the Sigma 10-20mm doesn’t have a protruding front element, so it’s possible to attach screw-thread filters directly to its 77mm filter thread.’ ‘Optically, this lens is very impressive, producing consistently sharp and crisp results which betray its focal range and price tag.’ 'Considering its quality, and carring the price tag of just £369.99 – a good few hundred quid less than both the Canon and Nikon equivalents - it would be tricky to overlook the Sigma 10-20mm zoom lens if you’re presently in the market for a super wideangle.’

	Digital SLR User - January 2007 ‘However it’s the independent brands that offer the best value with well made lenses that boast excellent optics. Of these, the Sigma 12-24mm offers the versatility of being able to be used with APS-C and full-frame SLRs. However, it’s the other Sigma - the 10-20mm - that scoops the best buy. Not only is it one of the most affordable ultra wide-angles, it also produces a sizzling performance that will please all but the most discerning or demanding user. We’d recommend you give it a try.’

	Photography Monthly - April 2007 ‘This lens is sharp with excellent contrast. Chromatic aberrations have been very well controlled with employment of three SLD elements, one moulded aspherical and two hybrid aspherical elements. Good distortion control and resolution, great contrast and a reasonable price give a lot of lens for the money.’

	Digital Camera - August 2007 ‘Despite costing less than half the price of the Nikon, the Sigma feels robust and has silent HSM autofocus. Designed for SLRs with APS-C-sized sensors, rather than full frame, the 10-20mm is available in Canon, Nikon, Sony/Minolta, Pentax and Sigma.’ ‘Solid build quality, great autofocus and a rock bottom price all make the Sigma 10-20mm a desirable lens.’

	PhotoPlus - October 2007 ‘But it’s the pictures produced by this lens that provide the most persuasive reason for buying it. The Sigma 10-20mm is particularly good at tackling the chromatic aberration problems that beset this sort of lens, keeping colour fringing to a minimum. When all things are weighed up, it’s the best lens overall in this round-up. Surprisingly, perhaps, the Sigma 10-20mm is also the least expensive lens in this round-up, and therefore it’s also the best value lens we tested.’