The Nikon Z8, a small powerful mirrorless camera with no real compromises. With 45 megapixels it’s quite the all rounder.
So why the question Z8 or the new Z6?
Well the fact is they complement each other quite well. The photograph above was taken a a photography show. Poor light and quite a few shots taken. I took my Leica M for several reasons. Smaller but also at 24 megapixels good low light performance especially when combined with the small fast Leica M lens. Often when shooting events and weddings many photographers including myself prefer 24-36 megapixels to make editing large batches of images quicker.
So if your a Z7,8 or Z9 user and shoot events; especially low light events at higher ISO adding a Z6 to your bag might be a good idea.
Studio work is where high megapixel cameras work best, or landscape work on a tripod. Your not limited by ISO and can maximise image quality.
At events or location photography you may be working fast, not working with a fast f/1.2 or f/1.8 prime but more likely a f/2.8 or f/4 zoom. Light will be lower, may be less space, those ISO settings are going to have to climb. This is where the a camera like the 24 megapixel Nikon Z6 makes more sense.