17mm · f/2.8
The MC Peleng 17mm f/2.8 A is a manual-focus diagonal fisheye lens with a 180° diagonal angle of view, produced by BelOMO. It offers sharpness at f/4 but is soft wide open. Build quality is solid with a metal body and good internal blackening. A notable weakness is that it does not fully cover the sensor corners on full-frame, requiring cropping. It suits photographers seeking an affordable ultra-wide fisheye for full-frame cameras, especially those comfortable with manual controls and willing to accept some optical compromises.