Sony A7RII + Fotasy adapter + Reflex-Nikkor C 1000mm f/11 + tripod, ISO 320, f/11 at 1/250s; 28% cropped (12/42.2MP). The bird was ~16m of distance.
The mirrorless camera (no mirror slapping and provoking blur) and the EVF with magnification are a huge help to reflex teles, which has a narrower DOF and are very very sensitive to camera/tripod minimal shake.
See how we birders always need more reach: this was a 1000m tele at just 16m away and still yo need to do cropping...
