In the GIF, if you notice, it looks like the scale is relatively fast at the beginning and gradually becomes slow at the end of loop. So I feel speed of zoom (scale) is not constant:
However, when I adjust the speed graph a bit like this, it makes the speed a bit constant. But that's just an hit and trial and not perfect. I don't understand why the default graph, which seems constant, behaved like that and altered graph, which seems increasing, makes it the way I want:
But when we do any position (x or y) animation (without easy ease), for any object, the speed is constant without any doubt.
So is it true scale behaves differently and scale speed isn't constant? If yes, is there any logical way to make the speed of scale constant (I mean making the zoom look like it's constant)?