Sigma 18-300mm f/3.5-6.3 DC Macro OS HS M | C £370/$500

TH IS BIG­GER SIGMA IS A MORE AT­TRAC­TIVE BUY

NPhoto - - Gear Zone -

Mea­sur­ing 79x102mm and weigh­ing 585g, this is one of the big­ger and heav­ier lenses on test, but it’s still man­age­able and feels well bal­anced, even on lighter weight DSLR bod­ies. It cer­tainly goes large on zoom range, with a tele­photo reach equiv­a­lent to 450mm in full­frame terms, although it can’t match the Tam­ron 16-300mm for ul­tra-wide view­ing an­gles.

Very sim­i­lar in look and feel to the Sigma 18-200mm, it also uses TSC (Ther­mally Sta­ble Com­pos­ite) bar­rel sec­tions, made from a high-grade plas­tic that’s re­sis­tant to ex­pan­sion and con­trac­tion dur­ing tem­per­a­ture changes. While both lenses have a 0.33x max­i­mum mag­ni­fi­ca­tion rat­ing, Sigma of­fers an op­tional ‘close-up lens’ for the 18300mm, which screws into the fil­ter at­tach­ment thread.

Per­for­mance

Aut­o­fo­cus is a lit­tle pedes­trian and it would be nice if the manual fo­cus ring didn’t ro­tate dur­ing AF. How­ever, thanks to the in­clu­sion of top-grade FLD (Flu­o­rite Low Dis­per­sion) el­e­ments, this lens out­guns the Sigma 18-200mm for sharp­ness.

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