optics-sept-10
dial focus = 5mm
dial focus = 4mm
dial focus = 3mm
dial focus = 2mm
dial focus = 1mm
dial focus = 0mm
dial focus = 0.62mm
dial focus = 5mm
dial focus = 4mm
dial focus = 3mm
dial focus = 2mm
dial focus = 1mm
dial focus = 0mm
dial focus = 0.62mm