Further to my first impressions, the IQ at high ISOs is indeed excellent. I have since evaluated test photos of birds etc deliberately taken > 6400 and higher. Unlike the Z6 and Z7, the D780 allows silent shooting at shutter speeds > 1/2000. I cannot find confirmation any statements in the manuals etc but the exif confirm this eg 1/3200.
I shoot the D780 alongside the D850, which is more lenient on cropping, obviously. The AFC of the D780 is not in the class of the D5 engine for serious action but it performs well IF you keep the subject in the narrower AF window.
