Reviews and Problems with Sigma 4.5mm F2.8 EX DC CIRCULAR FISHEYE HSM
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Sigma 4.5mm f/2.8 Fish-Eye Lens Review
8 May 2009
Excerpt: Fancy taking a look at the world around you using a totally different perspective? \LIf you do, Sigma’s remarkable 4.5mm f/2.8 EX DC HSM circular fish-eye may be just what you need to add to your armoury of lenses… Sigma announced the arrival of their 4.5mm fish-eye lens last November, along with a 10mm f/2.8 EX DC HSM fish-eye. It is the first digitally optimised circular fisheye designed exclusively for use with DSLRs incorporating an APS-C sized image sensor.
Conclusion: The Sigma 2.8/4.5 is an extremely interesting lens – as befits the first device in its category. It is an excellent instrument to play with photography and you will have plenty of fun if you try to take a portrait of somebody by putting the front element near the nose of your victim.
Cons: chromatic aberration too high at the very edge.