baCk TO ba­SiCS all abOuT lenSeS, parT 1

Camera - - CONTENTS -

We con­tinue our Back To Ba­sics se­ries with the first of a two-part break­down of lens de­sign and op­ti­cal per­for­mance. In this is­sue, we get started with fo­cal length; what is it ex­actly, and how does it in­flu­ence the im­age?

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