When taking macro photographs, you often need just a tiny bit of controlled motion \u2014 so little that it\u2019s tough to pull off by hand. To address this, [Salveo] designed a small open-source macro photography slider<\/a> featuring an anti-backlash handle.<\/p>\n Macro photography gives you an extremely shallow field of view, sometimes under 1 mm of depth, in which subjects stay in focus. To combat this, it\u2019s common to capture multiple images while sliding the camera forward or backward, then combine them for a much larger depth of field than a single shot provides. [Salveo]\u2019s slider gives fine control over this focus-stacking process, with the knob even marked to show every 1 mm of linear travel.<\/p>\n The slider is built around a 150 mm linear rail, though it could easily be lengthened or shortened to suit your needs. A T8 leadscrew, paired with anti-backlash nuts, translates the knob\u2019s rotation into smooth linear motion. The knob itself uses a custom-designed anti-backlash mechanism to ensure the slider works cleanly in either direction.<\/p>\n You can grab all the 3D-printable files as well as the full bill of materials from the project page<\/a>. Be sure to check out [Salveo]\u2019s build video below. Thanks [Tim L.] for sending in this awesome open-source slider. Be sure to check out some of the other macro photography<\/a> projects we\u2019ve covered, too.<\/p>\n