Correct rounding of corners for buttons, objects?

Question

Design

Hello. About a month ago, I read somewhere about the correct rounding of the corners of buttons, objects. It was written there that it is not desirable to make the corner radius around 20 because the corners are ugly, but it is necessary to make the corner radius 5-7 (I don’t remember the exact numbers, that’s why I’m writing this question) or to the maximum so that the object becomes round. Unfortunately, I forgot what rounding radius was recommended there, and the question is - in what range of numbers do you usually make the rounding radius for buttons and other objects, or what are the recommendations on this matter?

Answer 1

You don't need to be tied to numbers. Need soft rounding - set the Corner Radius more. Need sharp corners - less. There is no wrong radius. Example:
Another reason why you shouldn't bind to numbers is the unknown size of the button. In the screenshot, the height is 80px and the rounding is 20, but for a height of 500px, the rounding of 20px will look very different. I will give an example, I will leave the font size unchanged: