The problem is, timecode alone, while sufficient to provide syncing points for post production, may not be a reliable way to keep devices in sync with each other. With timecode, unless the cameras or recorders are re-jam-synced frequently, their timecode will start to drift apart. The problem is that the quartz crystal (or other piezo-electric material) clocks used in many cameras and quite a few audio recorders are too imprecise for critical applications.
Roller Naps. Paint roller nap sizes range from 1/4 to 1/2 inches in length. When painting a ceiling, the selection of a roller nap size depends on the surface of the ceiling. In general, a ceiling with a matte, flat, or eggshell finish calls for a roller nap of between 3/8 and 5/16 inches. If the ceiling is more textured, however, a longer nap may be called for.
Basic Texture Roller. Place a roller pad with 1-inch or thicker nap (padding) on a roller frame. An old pad that has been used and not thoroughly cleaned (so some of the tufts clump together) works best for this. Stretch and twist rubber bands around the pad at a variety of angles, creating clumps and random patterns with tufts and lines. Apply paint to your walls with this roller as you would with any roller, but slightly adjust the rubber bands periodically as you work to renew the texture.