unfortunately Rhino has a horrible limitation, that even restoring previously savedviews will not give you “exactly” the same screehshot, unless you also restore “exactly the same” viewport size + aspect ratio.
So when you save your view (for first screenshot) and when you restore it later (fore matching ones) you should run a macro like this:
…you should enter whatever size/aspect ratio you want. you can take screenshots at other resolutions, but you will always need to have a matching aspect ratio on the active viewport where the screenshots are taken.
I have bugged this to death, for many years, this is always very confusing to explain to most users, maybe you guys can finally come up with an elegant solution? so saved views are always dead-on exact? Can you also save the viewport-size/aspect ratio?