I'm starting to study K3 surfaces and i have seen many examples of them as Kummer surfaces, smooth quartic in $\mathbb{P}^3$, double covering of $\mathbb{P}^2$ ramified over a smooth sextic...

But no book i have read (i'm referring principally to huybrechts' notes) seems to deal the examples of hodge isometries between K3 surfaces.

Do you have or do you know where i could find some enlightening examples?