I'm working with a lot of jpgs for the first time, and am still adjusting to Pr from Avid.
In Avid, there's an "Ease In/Ease Out" function, so if you zoom in (Scale) or pan, it begins and ends the move smoothly- ramps up and down.
How would I do this in Pr?
Once you've set the keyframes on the Motion effects, right-click/cmd-click the keyframe dot and set the interpolation to "bezier".
Ahh, great, thanks Mark! (the bezier you get, the better it looks?! )
And, do not hesitate to explore the various methods of Interpolation, as each can have very slightly different effects.