Manual focus at F8 on a DSLR on moving targets will be a challenge. You might find some of Arthur Morris videos on YouTube interesting. He shot Canon, but I thought I heard he switched to Nikon...not sure... He has/had some nice Canon glass for sure...
Desmogger wrote:
The Lens I ordered (AF-S Nikkor 200-500mm f/5.6E ED VR) and the (TC-14E III) lists the following on the Autofocus is available only with cameras that offer f/8 support. These include the Z 7, Z 6, D5, D500, D4/D4S, Df, D850, D810/D810A, D800/D800E, D750, D600/D610, D7100, D7200 and D7500. For cameras that do not support f/8, teleconverters can be used without autofocus. So it Looks Like I need to order the D750 or a D7500 pretty soon. Or I will be using Manual Focus on the combination!