Yep, Zf feels heavy and VERY sturdy, built like a tank. That comes from Sony a7c user, who always had small and light cameras. SOny a7c felt like a toy compared to this one. Zf is like a camera/self-defence tool
I just came back from a trip where I used it heavily for a first time and it was pretty heavy for me - I used 24-70/4 zoom with it - this combo is too heavy for me, I wish there was smaller and lighter version. First time using zoom too. I hope Nikon will com eup with more compact SE primes, like their 40/2 for example.