I played a few uprights recently having not played one since I was a child and I was struck by how different they felt to my digital. After a few hours playing I've gotten mostly used to it, but one thing that feels very different is how the key action changes with the damper pedal.
Not sure how to describe it, but if you press a key down slowly you can feel part way down the let off point. If you press just a little faster you don't really feel the let off point, however if you hold the damper pedal fully down, you can feel the key almost increase in speed around where the let off point would be.
The difference in feel from when the key is pressed with no or a tiny amount of damper pedal vs when you have the pedal fully down (or close) is quite striking. Especially when playing softly/slowly.
What is it that causes this different feel to the key. As this doesn't feel different on the upper keys, I'm assuming it's related to the lack of the action needing to raise the damper for the pressed key, since the pedal has already raised it? Anyone able to describe precisely why it feels different though? Or know of any youtube videos that discuss this?