The second generation of the 7.5 mm F2.8 has been optimized in its optical structure. A single glass element with a higher refractive index is used in the front glass element to replace the cemented glass of the first generation. The rear group of optical glass is reinforced with HOYA ED glass, effectively improving chromatic aberration.

The image quality of the lens has been significantly enhanced. While various aberrations are corrected, the field of view has also been improved. The polishing process of the glass is now more precise and complex than in the previous generation. The optical structure of the entire lens still consists of 11 lenses, but the overall optical length has been shortened, making the lens more compact than before.

The exterior appearance retains the style of the first generation but continues to feature a fully metal body. The 7.5 mm F2.8 Mark II uses a housing oxidation process, and the color of the lens mount has been changed to electroplated tungsten steel, making it both beautiful and durable. It is newly adapted to the Nikon Z-Mount, providing users with more options.

Note: Due to the large angle of view of the fisheye lens, the filter holder of the lens hood will block the image, so no filter holders or lens hoods are currently available.