In 2006 Fixation was appointed the only Authorised Sigma Professional Service Centre in the UK.  We have two dedicated technicians with a number of  years of experience on Sigma lenses, now offering the same rapid turnaround as our other repair specialities. Please note that we are presently unable to carry out repairs to Sigma equipment under warranty, and these must be returned to Sigma's UK head office Service Department for repair. If spares parts are not available in time, we have a stock of the most popular Sigma EX Professional lenses in our Rental department which may be available for a free loan whilst we await spares, subject to status.  Please see our Rental list for details and prices.  We are shortly adding a range of Nikon-fit wide-angle fast-aperture lenses for use with the D3 - 20mm f1.8, 24mm f1.8, 28mm f1.8, 50mm f1.4 and the 30mm f1.4DC for the D300.  In addition, we will have the new MkII version of the 70-200mm f2.8 macro lens.