Tiny screw - Macro - SP60-300 - 40D-01498

2.5mm long screw

Equipment:Canon EOS 40D, Tamron SP 60-300mm F/3.9-5.4 Zoom Lens (23A). Two small halogen lamps + flash

Settings: Lens macro 1:1.55 setting, F/16 on lens, 1/260s, ISO 100.