Sigma Imaging (UK) Ltd

	British Journal of Photography - January 2005 The lenses are stylishly presented in a black satin finish and incorporate a manual / auto focus, along with focus range limiting switches. ...Both lenses have a maximum aperture of f/2.8 and, in the case of Sigma, Canon and Konica Minolta mounts, there is an unusually small minimum aperture of f/45 (f/32 for Nikon and Pentax). Although diffraction reduces resolution at such settings - f/45 becomes an effective f/90 at 1x magnification, approaching pinhole dimensions - this can provide beautiful effects with some shots and Sigma is to be applauded for providing this option. Both lenses produced excellent results, with fine detail and smooth tone gradation over a range of magnifications.'

	Ephotozine - January 2006 ‘There really isn’t a lot wrong with this lens as it is well built and optically performs to a very high standard. It maintains Sigma’s deserved reputation for producing high quality Macro lenses admirably.’ ‘Overall, this is an excellent lens that, on a cropped sensor, also doubles up as a decent length for portrait work.’

	What Digital Camera - August 2006 ‘The lens has an impressive maximum aperture of f/2.8, dropping to f/45 minimum (f/32 on Nikon or Pentax cameras). This is worth considering if you need maximum depth of field, because the closer you are to a subject, the shallower the depth of field. This is even more true with macro lenses, so focus can fall off pretty quickly.’

	Photography Monthly - September 2007 ‘Although it’s designed for use on full frame cameras, it’s equally at home on models with an APS-C sized sensor, when the magnification factor ensures it doubles up as an ideal portrait lens with a fairly fast aperture. This lens offers excellent resolution throughout the aperture range.’

	Digital Photographer - Issue 69 ‘But now for the winner… the Sigma excels in our view, as it is a true macro lens in every sense of the word. We love its brilliant magnification, really enabling you to pick up great texture and contrast in the smallest of subjects. This lens is so fantastically robust, especially in comparison to the plasticy feel of the other two contenders. If you’re after a decent macro performer, then this is a must for anyone looking to get closer than close.’

	PhotoPlus - September 2008 ‘When used with a [Canon EOS] 400D the magnification factor will produce a lens with an equivalent focal length of 80mm, which will satisfy a number of needs. At under £200 it’s also the cheapest lens here so if you’re on a tight budget this could be a good option for you.’

	Amateur Photographer - 31st January 2009 ‘Exception is always high for a close-focusing lens because, in order to provide top-quality performance across the wide focus range from 1:1 to infinity, corrections have to be of a high order. In the event, this full-frame Sigma lens is an excellent example. The most noticeable feature is its excellent, virtually perfect drawing – that is, the absence of curvilinear distortion. Combined with low spherical aberration, it means there is good definition at full aperture with high resolution across the frame.’