Reviews and Problems with Sigma MACRO 105mm F2.8 EX DG
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Sigma 105mm F/2.8 EX DG Macro
25 May 2010
Excerpt: Sigma's 105mm macro optic costs around £380, which is the same price as their more recently released 70mm F/2.8. The 105mm gives a little comfortable working distance, which should make it easier to light your subjects at high magnification, and you are less likely to scare off the subject. It is also more flattering for portraits.
Pros: Good build quality, Easy to switch between manual and auto focus, Smooth manual focus action, Recessed front element reduces need to use supplied hood
Cons: Lacklustre performance at maximum aperture, Slow, noisy AF
Summary: A good lens made better. The improvement in contrast and extra control of flare and ghosting provided by the DG coating are, in themselves, worth the upgrade. Improvements have also been made to the hood along with a reduction, albeit slight, in the AF noise. Optical quality cannot really be faulted and with the edges performing as well as the centre on a cropped camera you can expect good edge performance on a full frame body too.
Pros: Very good optical performance throughout the aperture range, Edges as good as centre. (on APS-C sensor), Contrast and aberration control improved from older model, Value for money
Cons: AF still not lightning., Lens cap not useable with hood. (minor niggle)