Imaging recource: To infinity… and beyond? Why lenses’ focus rings have changed over the years

    Last week I wrote an article about tips for achieving sharper landscape photos. Setting focus to infinity was once a common method to get sharp images of distant subjects, so why are modern lenses so often designed in a way which makes this difficult? Photographer Todd Vorenkamp wrote an article for B&H a couple of years ago discussing this very topic, entitled "Who killed infinity focus?" It used to be that a lens had a distinct infinity marking, or simply didn't allow you to roam beyond that point. And with mechanical linkages,...
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