Sigma 120-300mm f/2.8 DG OS HSM S £2700, $3600

What this beefy Sigma loses in telephoto reach, it gains in widest avail­able aper­ture

NPhoto - - Test Team -

Oc­cu­py­ing a unique spot in the mar­ket­place, this chunky Sigma lens com­bines a re­spectable telephoto zoom range with a wide f/2.8 aper­ture that re­mains con­stant through­out. As such, it’s two f/stops faster than typ­i­cal 70-300mm f/4-5.6 telephoto zooms at the long end of their zoom range. The dif­fer­ence in aper­ture width is even more ap­par­ent when com­pared to the lenses on test that stretch to 500mm or 600mm at f/6.3 but, then again, you’re limited to about half the telephoto reach.

Like the new Sigma 150600mm, this ‘Sport’ lens has weather seals, a fo­cus range lim­iter, dual-mode (but older gen­er­a­tion) sta­biliser, and cus­tomi­sa­tion op­tions that come cour­tesy of an op­tional USB dock. The lenses are al­most iden­ti­cal in size, but this one has an in­ter­nal zoom mech­a­nism so it doesn’t in­crease in length at greater zoom set­tings. It’s heav­ier, at 3.39kg com­pared with 2.86kg, but has the same 105mm fil­ter thread.

Per­for­mance

This lens matches the Sigma 150-600mm S in hav­ing two FLD el­e­ments, but has only one SLD el­e­ment. Even so, it de­liv­ers ex­cel­lent im­age qual­ity through­out the zoom range. In our tests, the sta­biliser gave a ben­e­fit of about three stops.

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