Color gradient filament is fun stuff to play with. It lets you make 3D prints that slowly fade from one color to another along the Z-axis. [David Gozzard] wanted to do some printing with this ...
Canon’s new 3D lens has an aperture range of f/4.0 to f/16, supports autofocus, and features a button and a control wheel for making separate manual focus adjustments to the left and right sides.