The Nikon Z 6 is compatible with a wide variety of F-mount lenses when the Mount Adapter FTZ is attached to it. Both the Nikon AF-S NIKKOR 28-300mm f/3.5 -5.6G ED VR Standard Zoom lens and the Nikon AF-S DX NIKKOR 18-300mm f/3.5-6.3G ED VR lens are designed to capture sharp and vibrant subjects near and far; however, the 18-300mm is a DX-format lens, which would introduce a 1.5 crop factor to your full-frame images, while the 28-300mm is optimized to work with an full-frame format camera like the Nikon Z 6 and will not have this crop. Even with this difference, either would make a great addition to your growing camera bag.

Both of these lenses would be amazing choices when paired with the Nikon D7500 Digital SLR.  The AF-S DX NIKKOR 18-300mm f/3.5-6.3G ED VR will have the better range of the two and is a DX lens, meaning it will be optimized for the D7500's DX "Crop" sensor.  The AF-S NIKKOR 28-300mm f/3.5-5.6G ED VR will allow for the wider open aperture at 300mm making it the faster of the two lenses.  This lens was made for our FX Full Frame sensor cameras so it will be fully optimized for a wider range of cameras.