Ed and Raymnond:
HAve several Yokogawa scopes, with 500 MHz BW will try out and post images.
The transient response on analog scopes can be tweaked for best risetime but sime overshoot, and usually several small ripples.
Unclear if digital scopes can be adjusted for this.
PS: the number bits referred to as "effective number of bits " ENOB " may include a few "marketing bits" (:-:) as per Bruce Jackson, Apogee Electronics