Tam­ron SP AF 17-50mm f/2.8 XR Di II VC LD £380/$650

THIS OLD-SCHOOL ZOOM STILL HAS SOME­THING TO OF­FER

NPhoto - - Gear Zone -

Now eight years old, this Tam­ron lens com­bines a fast, con­stant f/2.8 aper­ture with VC (Vi­bra­tion Com­pen­sa­tion) sta­bi­liza­tion.

It com­petes di­rectly with the Sigma 17-50mm for zoom range, aper­ture rat­ing and sta­bi­liza­tion, and is al­most ex­actly the same size and weight. Un­like the Sigma, how­ever, the Tam­ron has a smaller fil­ter thread of 72mm in­stead of 77mm; doesn’t come with a soft case; and has a more ba­sic elec­tric aut­o­fo­cus mo­tor. The op­ti­cal path in­cludes an XR (eX­tra Re­frac­tive In­dex) el­e­ment, two LD (Low Dis­per­sion) el­e­ments and BBAR (Broad-Band Anti-Re­flec­tion) anti-re­flec­tive coat­ings.

Per­for­mance

Aut­o­fo­cus speed is a lit­tle quicker than in the DX-for­mat Sigma lenses, but the mo­tor is com­par­a­tively noisy. Again, the fo­cus ring ro­tates dur­ing aut­o­fo­cus and there’s no full­time man­ual over­ride. Cen­tre­sharp­ness is ex­cel­lent at short to mid zoom set­tings but cor­ner­sharp­ness is rel­a­tively poor at both ends of the zoom range.

Newspapers in English

Newspapers from Australia

© PressReader. All rights reserved.