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.
What nap roller should I use for primer? I use 1/2 for primers, flats, mattes, and eggshells (on full size rooms). I haven't put a 3/8 cover in flat in about 8-10 years. I would use 3/8 for mattes and eggshells in small area rooms, but not for the texture but the quantity the cover holds. I don't want a cover that will hold enough paint to paint one half of the room with a single dip. And though I haven't rolled semi-gloss on walls in I don't know how long, I would use a 3/8 if I couldn't dodge that bullet. 1/2 and up for textured walls regardless of sheen. Tool, they do spec certain covers for certain sheens.