Adapted Lens Yashica ML 28mm vs FE2870
I have three copies of the Yashica ML 28mm f2.8 with a focal reducer (Zhongyi Lens Turbo II) and an A6000. It has excellent color reproduction (reds 'pop' with a 3D effect) and very good central sharpness. However, sharpness is not very good in borders as comoared with the kit lens. I suppose that the FE 28mm is better in sharpness, but if you are planning to use a simple adapter, both lenses are similar in sharpness.