Paul Carroll has just posted a detailed review of the Sigma 18-300mm F3.5-6.3 DC Macro OS HSM Lens at the DxOMark.com. Achieving an overall DxOMark score of 15 points tested on the Pentax K-5 IIs, this lens wins the top-ranked super zoom for the Pentax KAF lens mount. Read More »
Sigma has announced 4 new lenses in 2014: Sigma 18-200mm F3.5-6.3 DC Macro OS HSM | C ,Sigma 50mm F1.4 DG HSM | A ,Sigma 150-600mm F5-6.3 DG OS HSM | S/C and Sigma 18-300 F3.5-6.3 DC Macro OS HSM | C .
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Sigma announced a 18-300mm f/3.5-6.3 DC OS HSM in Sep, 2014.