Our cameras will be able to get images of the icy moons with an excellent resolution: less than 10 meters [33 feet] per pixel. We will have global coverage — particularly of Ganymede, and hopefully, Callisto. I'd say that of these two moons, JUICE will take the best images ever.
For Jupiter, we will not have such close images as Juno, for example, because we will orbit much farther away. And Europa Clipper will take much better images of Europa than JUICE; that's for sure.