Fo­cus limit

NPhoto - - FEATURE -

Some lenses have a fo­cus limit switch that pre­vents the lens from try­ing to aut­o­fo­cus at cer­tain dis­tances, lim­it­ing the amount of ‘hunt­ing’ as the cam­era at­tempts to achieve fo­cus, use­ful for tele­photo fo­cal lengths. For ex­am­ple, a limit of 6m-in­fin­ity will stop the lens from at­tempt­ing to fo­cus at the min­i­mum fo­cus dis­tance when you’re shoot­ing far-off wildlife.

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