Fuji X-T1 fitted to an old Russian MTO 1000mm lens and Fuji 1.4x converter, using a K&F adapter (giving 2100mm 35mm equivalent) and if you are wondering how images look here are some herons from about 250 metres, this is an uncropped image and sharpness is as expected, unfortunately :-(. 1/160s f14 1600 iso