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Here are a few things to bear in mind when choos­ing a su­per­zoom

Wide-an­gle view­ing

All of the lenses on test of­fer an 18mm min­i­mum fo­cal length, which is equiv­a­lent to 27mm, apart from the Tam­ron 16-300mm lens, which is equiv­a­lent to 24mm. Fo­cus dis­tance scale Most lenses on test have a fo­cus dis­tance scale printed on the fo­cus ring or be­neath a view­ing panel, but the Tam­ron 18-200mm and the newer edi­tion of the Nikon 18-300mm have none at all.

Tele­photo reach

The usual choice of max­i­mum tele­photo fo­cal length is ei­ther 200mm or 300mm – equiv­a­lent to 300mm or 450mm re­spec­tively, in full-frame terms. The Tam­ron 18-270mm lens is the ex­cep­tion.

Aut­o­fo­cus sys­tem

Ring-type ul­tra­sonic aut­o­fo­cus is the most re­fined op­tion, although elec­tric or ul­tra­sonic mo­tor-driven sys­tems can help re­duce the size and weight of the lens.

Mount­ing plate

Apart from the Tam­ron 18-200mm, which has a plas­tic mount­ing plate, all of the other lenses on test have a metal mount.

Weather-seal ring

A weather-seal ring is fit­ted to the mount­ing plates of all three Nikon lenses, and to the Tam­ron 18-200mm and 16-300mm lenses.

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