Lenses sure can be expensive for mirrorless cameras. When I first bought a Nikon Z camera, I picked up the versatile 24-70mm F2.8 S to go with it, and that fabulous lens tied me over for a few years until I could afford a second one.
Recently, I have been able to pick up a few more optics because I have found an affordable alternative that doesn't compromise on quality, and that's Viltrox.
