How to adjust the focus of Nano series

Prerequisites: First, you need to know the focal lengths of the Nano series cameras. Different cameras have different focal lengths. The focal length of the Nano is 110 mm, the focal length of the Nano is 150 mm, the focal length of the Nano Duo is 220.5 mm, and the focal length of the Nano Ruby is 150 mm.

Method 1: Focus the lens hood: Align the machine with the filament to be engraved until it presses against the filament to achieve the focal point.

Method 2: Ruler Focus: Place a ruler under the field lens until it presses against the filament to achieve the focal point.

Method 3: Dual Red Dot Focus: Click the focus button on the top of the camera. Two red dots will appear. Align them to form the focal point (this is the most common method).