Tele­con­vert­ers

NPhoto - - FEATURE -

A tele­con­verter sits be­tween the cam­era and a tele­photo lens and ‘boosts’ the fo­cal length – by a fac­tor of 1.4x or 2x. How­ever, there’s a price to pay (there al­ways is), as the max­i­mum aper­ture de­creases by one or two stops re­spec­tively, ef­fec­tively turn­ing a 70-200mm f/2.8 lens into a 98-280mm f/4 or 140-400mm f/5.6. Op­ti­cal qual­ity can suf­fer a lit­tle as well, due to the ad­di­tional lens el­e­ments.

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