Fisheye lenses available for MFT cameras are 8mm prime lenses (e.g. the Zuiko 8mm Pro FE), have 180o diagonal angle of view and give very good image quality. Upon close approach, however, one may wish to have a zoom lens that allows to reduce the diagonal angle of view and greater object distances. With the Canon 8-15mm and the Tokina 10-17mm such lenses are available with Canon EF mount that can be used with appropriate adapters on MFT cameras.   First a size comparison of both lenses with t