Micro bullet cameras, specifically those with so-called microlenses are proven workhorses for physical security and low key building surveillance. However, with a few inexpensive changes...you can turn the tiny camera into a stealthy, criminal catching machine.
Ditch The Stock Lens
First things first, lose the included lens. Odds are, for covert video surveillance you'll want to have the camera some distance away from the target. That being the case, you'll want to remove the included lens in exchange for a much more powerful lens. Fortunately, bullet cameras such as the MAXSUR MCML7B accept an M12 type lens, and for the most part, any M12 lens will work with it.
Typically, bullet cameras...