This is a 100% crop from a shot with my R7 with 100-400 plus 1.4X extender. The focal length was 560mm, which is full frame equivalent of 900mm. This crop is about 1:5.5, which gives this shot a full frame equivalent of about 5000mm! I've put (a downsized version of) the full frame in Pending, so you can see how small this was in the viewfinder. I used DXO Photolab to generate a cropped DNG from the RAW, which I then processed in Topaz AI, and finished off in Lightroom. The combination of modern cameras and lenses and software does allow shooting from very far away!