Focal MC Auto 28mm f/2.8 Lens for Pentax K *USED*

The Focal MC Auto 28mm f/2.8 is a classic manual-focus wide-angle lens produced as a house-brand for Kmart during the 1970s and 80s. While "Focal" was a budget-tier label, these lenses were manufactured by reputable Japanese original equipment manufacturers (OEMs) such as Chinon, Cosina, or Mitakon. For users of the Pentax K-mount system, this lens serves as an affordable, compact alternative to the more expensive SMC Pentax or Takumar primes, offering a tactile all-metal construction that feels surprisingly robust compared to modern entry-level optics.

The "MC" designation indicates that the lens features multi-coating, which helps to improve light transmission and reduce the flaring that often plagued earlier single-coated budget lenses. The "Auto" in the name refers to the automatic diaphragm coupling—a standard feature for the K-mount—which allows the lens to stay wide open for focusing while automatically stopping down to the selected aperture at the moment the shutter is released. Optically, it provides a 75-degree field of view on full-frame cameras, making it a versatile tool for street photography, landscapes, and environmental portraits.