AF 26mm f/2.8 ASPH •  
AF: Auto Focus, indicating the lens supports autofocus.  
26mm f/2.8: The focal length and aperture of the lens; 26mm is the physical focal length, and f/2.8 is the maximum aperture.  
ASPH: Aspherical, referring to the use of aspherical lens elements that reduce aberrations, minimize weight, and improve image quality by reducing reliance on conventional spherical lenses.  
Full Frame •  
Full Frame: Indicates this lens is designed for full-frame camera systems.  
φ43mm 0.2m / 0.66ft •  
φ43mm: Refers to compatibility with a 43mm lens hood or filter; however, this lens requires a lens hood to be installed before filters can be used.  
0.2m / 0.66ft: The minimum focusing distance of the lens, measured in meters and feet.