Viewed from the incisal aspect, which feature of a canine is generally NOT well visualized?

An incisal view shows the crown's outline, the cusp tip position, and lingual surface features such as the cingulum, the lingual ridge, and the mesial/distal lingual fossae. The cervical line (CEJ) is a side-profile feature best seen from a facial or lingual (not incisal) view.